Overall Green alert Volcanic eruption for Poas
in Costa Rica

Volcano Ash Advisories for air traffic

Although Volcano Ash Advisories (VAAC) are not intended for assessing humanitarian impact, the observations of the plume are relevant for understanding local impact. The actual impact (like ash fall) depends on the type of eruption and is not known.

Click on the messages list to visualize on the right the detailed text.



27/03 07:50

Volcanic Ash Advisory issued on 2025-05-20 at 17:19 UTC.

    Key information extracted from original VAA message :


  • No volcanic ash emission.
  • Volcanic ash not detected in satellite img or webcam. No reports of volcanic ash emission received. Gatling.

Original Message :

Received FVXX20 at 17:20 UTC, 20/05/25 from KNES
VA ADVISORY
DTG: 20250520/1719Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/146
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: NO VA EMS
OBS VA DTG: 20/1620Z
OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA.
FCST VA CLD +6HR: 20/2230Z NO VA EXP
FCST VA CLD +12HR: 21/0430Z NO VA EXP
FCST VA CLD +18HR: 21/1030Z NO VA EXP
RMK: VA NOT DETECTED IN STLT IMG OR WEBCAM. NO
RPRTS OF VA EMS RCVD. ...GATLING
NXT ADVISORY: NO FURTHER ADVISORIES
Tsunami Observations

  • The following are tsunami wave observations from coastal and/or deep-ocean sea level gauges at the indicated locations the maximum tsunami height is measured with respect to the normal tide level
GAUGE LOCATIONLATLONTIME (UTC)HEIGHT (m)PERIOD (min)
Hrakleio (Greece)35.348425.152503:280.056

Volcanic Ash Advisory issued on 2025-05-20 at 11:23 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Emission of gas and steam observation in webcam with possible volcanic ash mixed in. Volcanic ash not detected in satellite img. Intermittent volcanic ash emission may continue. Model guidance suggests w mvmt from summit through t+6. Gatling.

Original Message :

Received FVXX20 at 11:25 UTC, 20/05/25 from KNES
VA ADVISORY
DTG: 20250520/1123Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/145
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
EST VA DTG: 20/1050Z
EST VA CLD: SFC/FL100 N1013 W08424 - N1012 W08413 - N1011 W08413 - N1008 W08423 - N1013 W08424 MOV W 5KT
FCST VA CLD +6HR: 20/1700Z SFC/FL100 N1018 W08427 - N1012 W08414 - N1011 W08414 - N1012 W08428 - N1018 W08427
FCST VA CLD +12HR: 20/2300Z NO VA EXP
FCST VA CLD +18HR: 21/0500Z NO VA EXP
RMK: EMS OF GAS AND STEAM OBS IN WEBCAM WITH PSBL
VA MIXED IN. VA NOT DETECTED IN STLT IMG. INTMT
VA EMS MAY CONT. MDL GUIDANCE SUGGESTS W MVMT FM
SUMMIT THRU T+6. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250520/1730Z
Volcanic Ash Advisory issued on 2025-05-20 at 05:25 UTC.

    Key information extracted from original VAA message :


  • Ongoing volcanic ash emission.
  • Volcanic ash not detected on satellite due to weather clouds on summit area. Webcam shows continuous steam/gas emission with some volcanic ash likely. No change forecast to model winds at.

Original Message :

Received FVXX20 at 05:27 UTC, 20/05/25 from KNES
VA ADVISORY
DTG: 20250520/0525Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/144
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: ONGOING VA EMS
EST VA DTG: 20/0500Z
EST VA CLD: SFC/FL100 N1014 W08419 - N1012 W08413 - N1011 W08414 - N1011 W08419 - N1014 W08419 MOV W 5KT
FCST VA CLD +6HR: 20/1100Z SFC/FL100 N1014 W08419 - N1012 W08414 - N1012 W08413 - N1011 W08419 - N1014 W08419
FCST VA CLD +12HR: 20/1700Z NO VA EXP
FCST VA CLD +18HR: 20/2300Z NO VA EXP
RMK: VA NOT DETECTED ON STLT DUE TO WX CLDS ON
SUMMIT AREA. WEBCAM SHOWS CONS STEAM/GAS EMS WITH
SOME VA LIKELY. NO CHG FCST TO MDL WINDS AT FL
NXT 6 HR. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250520/1130Z
Tsunami Observations

  • The following are tsunami wave observations from coastal and/or deep-ocean sea level gauges at the indicated locations the maximum tsunami height is measured with respect to the normal tide level
GAUGE LOCATIONLATLONTIME (UTC)HEIGHT (m)PERIOD (min)
Hrakleio (Greece)35.348425.152503:280.056

Volcanic Ash Advisory issued on 2025-05-19 at 23:38 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission possible.
  • No volcanic ash crntly observation in satellite imagery or webcam. Volcanic ash emission possible w of summit. Volcanic ash forecast through t+6 hours based on nwp. Coverdale.

Original Message :

Received FVXX20 at 23:40 UTC, 19/05/25 from KNES
VA ADVISORY
DTG: 20250519/2338Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/143
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS PSBL
EST VA DTG: 19/2310Z
EST VA CLD: SFC/FL100 N1014 W08419 - N1013 W08413 - N1011 W08413 - N1009 W08418 - N1014 W08419 MOV W 5KT
FCST VA CLD +6HR: 20/0500Z SFC/FL100 N1015 W08421 - N1013 W08413 - N1011 W08413 - N1009 W08420 - N1015 W08421
FCST VA CLD +12HR: 20/1100Z NO VA EXP
FCST VA CLD +18HR: 20/1700Z NO VA EXP
RMK: NO VA CRNTLY OBS IN STLT IMAGERY OR WEBCAM.
VA EMS REMAIN PSBL W OF SUMMIT. VA FCST THRU T+6
HRS BASED ON NWP MDLS. ...COVERDALE
NXT ADVISORY: WILL BE ISSUED BY 20250520/0545Z
Tsunami Observations

  • The following are tsunami wave observations from coastal and/or deep-ocean sea level gauges at the indicated locations the maximum tsunami height is measured with respect to the normal tide level
GAUGE LOCATIONLATLONTIME (UTC)HEIGHT (m)PERIOD (min)
Hrakleio (Greece)35.348425.152503:280.056

Volcanic Ash Advisory issued on 2025-05-19 at 17:42 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission obsd in webcam.
  • Volcanic ash emission obsd in webcam. Volcanic ash emission not vsbl in satellite img due to meteorological clouds but volcanic ash emission likely obscured. Ltlgc in forecast exp through t+12 hours. Mvmt and height based on webcam observation and nwp. Bertalan.

Original Message :

Received FVXX20 at 17:44 UTC, 19/05/25 from KNES
VA ADVISORY
DTG: 20250519/1742Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/142
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS OBSD IN WEBCAM
EST VA DTG: 19/1710Z
EST VA CLD: SFC/FL100 N1015 W08425 - N1013 W08413 - N1011 W08413 - N1008 W08423 - N1015 W08425 MOV SW 10KT
FCST VA CLD +6HR: 19/2300Z SFC/FL100 N1015 W08430 - N1014 W08413 - N1011 W08413 - N1006 W08428 - N1015 W08430
FCST VA CLD +12HR: 20/0500Z SFC/FL100 N1017 W08429 - N1013 W08413 - N1012 W08413 - N1008 W08428 - N1017 W08429
FCST VA CLD +18HR: 20/1100Z NO VA EXP
RMK: VA EMS OBSD IN WEBCAM. VA EMS NOT VSBL IN
STLT IMG DUE TO MET CLDS BUT VA EMS LIKELY OBSCD.
LTLGC IN FCST EXP THRU T+12 HRS. MVMT AND HGT
BASED ON WEBCAM OBS AND NWP MDLS. ...BERTALAN
NXT ADVISORY: WILL BE ISSUED BY 20250519/2345Z
Tsunami Observations

  • The following are tsunami wave observations from coastal and/or deep-ocean sea level gauges at the indicated locations the maximum tsunami height is measured with respect to the normal tide level
GAUGE LOCATIONLATLONTIME (UTC)HEIGHT (m)PERIOD (min)
Hrakleio (Greece)35.348425.152503:280.056

Volcanic Ash Advisory issued on 2025-05-19 at 11:51 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission obsd in webcam.
  • Vona received. Volcanic ash emission obsd in webcam. Volcanic ash emission not vsbl in satellite img due to meteorological clouds but volcanic ash emission may be obscured. A more w mvmt exp through t+6 hours. Mvmt and height based on vona, webcam observation and nwp. Bertalan.

Original Message :

Received FVXX20 at 11:55 UTC, 19/05/25 from KNES
VA ADVISORY
DTG: 20250519/1151Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/141
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS OBSD IN WEBCAM
EST VA DTG: 19/1120Z
EST VA CLD: SFC/FL100 N1013 W08414 - N1011 W08413 - N1006 W08422 - N1011 W08425 - N1013 W08414 MOV SW 10KT
FCST VA CLD +6HR: 19/1730Z SFC/FL100 N1015 W08431 - N1013 W08413 - N1012 W08413 - N1008 W08429 - N1015 W08431
FCST VA CLD +12HR: 19/2330Z NO VA EXP
FCST VA CLD +18HR: 20/0530Z NO VA EXP
RMK: VONA RCVD. VA EMS OBSD IN WEBCAM. VA EMS NOT
VSBL IN STLT IMG DUE TO MET CLDS BUT VA EMS MAY
BE OBSCD. A MORE W MVMT EXP THRU T+6 HRS. MVMT
AND HGT BASED ON VONA, WEBCAM OBS AND NWP MDLS.
...BERTALAN
NXT ADVISORY: WILL BE ISSUED BY 20250519/1745Z
Volcanic Ash Advisory issued on 2025-05-16 at 18:35 UTC.

    Key information extracted from original VAA message :


  • No rcnt volcanic ash.
  • No volcanic ash emission rcntly observation in satellite imagery or webcam. Webcam now obscured by weather no rcnt report of volcanic ash received. Coverdale.

Original Message :

Received FVXX21 at 18:37 UTC, 16/05/25 from KNES
VA ADVISORY
DTG: 20250516/1835Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/140
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
OVSICORI-UNA.
ERUPTION DETAILS: NO RCNT VA
OBS VA DTG: 16/1800Z
OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA.
DATA.
FCST VA CLD +6HR: 17/0000Z NO VA EXP
FCST VA CLD +12HR: 17/0600Z NO VA EXP
FCST VA CLD +18HR: 17/1200Z NO VA EXP
RMK: NO VA EMS RCNTLY OBS IN STLT IMAGERY OR
WEBCAM. WEBCAM NOW OBSCD BY WX CLDS. NO RCNT RPRT
OF VA RCVD. ...COVERDALE
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-05-16 at 12:55 UTC.

    Key information extracted from original VAA message :


  • Poss volcanic ash emission continuing.
  • Emission seen in webcam but difficult to see if volcanic ash is containted volcanic ash not seen in satellite due to meteorological guidance shows a continue nw move through t+6 hours. Move and height based on model guidance. Kibler.

Original Message :

Received FVXX21 at 12:56 UTC, 16/05/25 from KNES
VA ADVISORY
DTG: 20250516/1255Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/139
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: POSS VA EMS CONTG
EST VA DTG: 16/1230Z
EST VA CLD: SFC/FL100 N1018 W08420 - N1012 W08414 - N1011 W08414 - N1015 W08422 - N1018 W08420 MOV NW 5KT
NW 5KT
FCST VA CLD +6HR: 16/1830Z SFC/FL100 N1022 W08421 - N1012 W08414 - N1012 W08414 - N1018 W08423 - N1022 W08421
N1022 W08421
FCST VA CLD +12HR: 17/0030Z NO VA EXP
FCST VA CLD +18HR: 17/0630Z NO VA EXP
RMK: EMS SEEN IN WEBCAM BUT DIFFICULT TO SEE IF
VA IS CONTAINTED WITHIN PLUME. VA NOT SEEN IN SAT
DUE TO MET CLDS. GUIDANCE SHOWS A CONT NW MOV
THRU T+6 HRS. MOV AND HGT BASED ON MODEL
GUIDANCE. ...KIBLER
NXT ADVISORY: WILL BE ISSUED BY 20250516/1900Z
Volcanic Ash Advisory issued on 2025-05-16 at 06:53 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Emission of gas and steam with volcanic ash maybe mixed in.

Original Message :

Received FVXX21 at 06:55 UTC, 16/05/25 from KNES
VA ADVISORY
DTG: 20250516/0653Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/138
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
EST VA DTG: 16/0620Z
EST VA CLD: SFC/FL100 N1013 W08425 - N1012 W08414 - N1011 W08413 - N1008 W08425 - N1013 W08425 MOV W 5KT
FCST VA CLD +6HR: 16/1230Z SFC/FL100 N1023 W08422 - N1011 W08413 - N1011 W08414 - N1019 W08426 - N1023 W08422
FCST VA CLD +12HR: 16/1830Z NO VA EXP
FCST VA CLD +18HR: 17/0030Z NO VA EXP
RMK: EMS OF GAS AND STEAM WITH VA MAYBE MIXED IN
OBS IN WEBCAM. VA NOT DETECTED IN STLT IMG. W
MVMT FM SUMMIT TO SHIFT NW BY T+6. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250516/1300Z
Volcanic Ash Advisory issued on 2025-05-16 at 01:02 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Webcam shows incandescence at summit implying possible volcanic ash emission. Weather clouds obscuring summit on satellite and partly obscuring webcam. Nwp models suggest volcanic ash moving wsw with little change forecast. Hosley.

Original Message :

Received FVXX21 at 01:06 UTC, 16/05/25 from KNES
VA ADVISORY
DTG: 20250516/0102Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/137
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS.
OBS VA DTG: 16/0030Z
OBS VA CLD: SFC/FL100 N1012 W08414 - N1011 W08413 - N1008 W08418 - N1011 W08419 - N1012 W08414 MOV SW 10KT
FCST VA CLD +6HR: 16/0630Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1008 W08419 - N1011 W08420 - N1012 W08413
FCST VA CLD +12HR: 16/1230Z NO VA EXP
FCST VA CLD +18HR: 16/1830Z NO VA EXP
RMK: WEBCAM SHOWS INCANDESCENCE AT SUMMIT
IMPLYING PSBL VA EMS. WX CLDS OBSCG SUMMIT ON
STLT AND PTLY OBSCG WEBCAM. NWP MDLS SUG VA MOVG
WSW WITH LTLCG FCST. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250516/0700Z
Volcanic Ash Advisory issued on 2025-05-15 at 19:42 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash possibly continuing.
  • Volcanic ash not obsd by satellite or webcam as summit is.

Original Message :

Received FVXX21 at 19:45 UTC, 15/05/25 from KNES
VA ADVISORY
DTG: 20250515/1942Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/136
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: VA PSBLY CONTG.
OBS VA DTG: 15/1850Z
OBS VA CLD: SFC/FL100 N1013 W08418 - N1012 W08413 - N1011 W08413 - N1011 W08419 - N1013 W08418 MOV W 10KT
FCST VA CLD +6HR: 16/0100Z SFC/FL100 N1013 W08419 - N1012 W08414 - N1011 W08413 - N1010 W08419 - N1013 W08419
FCST VA CLD +12HR: 16/0700Z NO VA EXP
FCST VA CLD +18HR: 16/1300Z NO VA EXP
RMK: VA NOT OBSD BY STLT OR WEBCAM AS SUMMIT IS
OBSCD BY WX CLD CVR. NWP MDLS SUG VA MOVG W AND
FCST LTLCG THRU T+6HRS. NO NEW VONAS HAVE BEEN
RCVD. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250516/0145Z
Volcanic Ash Advisory issued on 2025-05-15 at 13:38 UTC.

    Key information extracted from original VAA message :


  • Poss volcanic ash emission.
  • Volcanic ash emission or clouds not obsd in satellite and webcab due to meteorological volcanic ash and direction based on prev vaa and model guidance. Nwp model forecast little change through. Zeng.

Original Message :

Received FVXX21 at 13:40 UTC, 15/05/25 from KNES
VA ADVISORY
DTG: 20250515/1338Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/135
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: POSS VA EMS
OBS VA DTG: 15/1310Z
OBS VA CLD: SFC/FL100 N1014 W08423 - N1012 W08413 - N1011 W08414 - N1011 W08423 - N1014 W08423 MOV W 10KT
FCST VA CLD +6HR: 15/1900Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1010 W08420 - N1012 W08421 - N1012 W08414
FCST VA CLD +12HR: 16/0100Z NO VA EXP
FCST VA CLD +18HR: 16/0700Z NO VA EXP
RMK: VA EMS OR CLDS NOT OBSD IN SAT AND WEBCAB
DUE TO MET CLDS. VA FL AND DIR BASED ON PREV VAA
AND MDL GUIDANCE. NWP MDL FCST LTLCG THRU T+6HRS.
...ZENG
NXT ADVISORY: WILL BE ISSUED BY 20250515/1945Z
Volcanic Ash Advisory issued on 2025-05-15 at 07:38 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Volcanic ash not visible in satellite img likely due to heavy meteorological cloud cover. Volcanic ash emission maybe observation in webcam. Model guidance suggests w mvmt from summit to shift nw by t+12. Gatling.

Original Message :

Received FVXX21 at 07:39 UTC, 15/05/25 from KNES
VA ADVISORY
DTG: 20250515/0738Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/134
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
EST VA DTG: 15/0710Z
EST VA CLD: SFC/FL100 N1012 W08414 - N1011 W08413 - N1007 W08423 - N1012 W08424 - N1012 W08414 MOV W 10KT
FCST VA CLD +6HR: 15/1300Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1006 W08427 - N1011 W08428 - N1012 W08413
FCST VA CLD +12HR: 15/1900Z SFC/FL100 N1023 W08421 - N1012 W08413 - N1011 W08414 - N1020 W08426 - N1023 W08421
FCST VA CLD +18HR: 16/0100Z NO VA EXP
RMK: VA NOT VISIBLE IN STLT IMG LIKELY DUE TO
HEAVY MET CLD CVR. VA EMS MAYBE OBS IN WEBCAM.
MDL GUIDANCE SUGGESTS W MVMT FM SUMMIT TO SHIFT
NW BY T+12. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250515/1345Z
Volcanic Ash Advisory issued on 2025-05-15 at 02:05 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission obsd in webcam?.
  • Volcanic ash emission obsd in webcam. No volcanic ash emission vsbl in satellite img due to meteorological clouds but volcanic ash emission may be obscured. A more w mvmt exp by t+6 hours. Mvmt and height based on webcam observation and nwp. Bertalan.

Original Message :

Received FVXX21 at 02:08 UTC, 15/05/25 from KNES
VA ADVISORY
DTG: 20250515/0205Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/133
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS OBSD IN WEBCAM?
EST VA DTG: 15/0140Z
EST VA CLD: SFC/FL100 N1013 W08413 - N1011 W08413 - N1005 W08422 - N1012 W08425 - N1013 W08413 MOV SW 10KT
SW 10KT
FCST VA CLD +6HR: 15/0730Z SFC/FL100 N1014 W08432 - N1013 W08414 - N1011 W08413 - N1005 W08432 - N1014 W08432
N1014 W08432
FCST VA CLD +12HR: 15/1330Z SFC/FL100 N1017 W08432 - N1012 W08413 - N1011 W08413 - N1007 W08432 - N1017 W08432
W08432 - N1017 W08432
FCST VA CLD +18HR: 15/1930Z NO VA EXP
RMK: VA EMS OBSD IN WEBCAM. NO VA EMS VSBL IN
STLT IMG DUE TO MET CLDS BUT VA EMS MAY BE OBSCD.
A MORE W MVMT EXP BY T+6 HRS. MVMT AND HGT BASED
ON WEBCAM OBS AND NWP MDLS. ...BERTALAN
NXT ADVISORY: WILL BE ISSUED BY 20250515/0800Z
Volcanic Ash Advisory issued on 2025-05-14 at 20:22 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission obsd in webcam.
  • Vona received. Volcanic ash emission obsd in webcam. Volcanic ash emission not.

Original Message :

Received FVXX21 at 20:24 UTC, 14/05/25 from KNES
VA ADVISORY
DTG: 20250514/2022Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/132
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS OBSD IN WEBCAM
EST VA DTG: 14/2000Z
EST VA CLD: SFC/FL100 N1016 W08423 - N1012 W08413 - N1011 W08414 - N1010 W08423 - N1016 W08423 MOV W 5KT
FCST VA CLD +6HR: 15/0200Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1002 W08423 - N1008 W08428 - N1012 W08414
FCST VA CLD +12HR: 15/0800Z NO VA EXP
FCST VA CLD +18HR: 15/1400Z NO VA EXP
RMK: VONA RCVD. VA EMS OBSD IN WEBCAM. VA EMS NOT
OBSD IN STLT IMG DUE TO MET CLDS BUT VA EMS MAY
BE OBSCD. W MVMT EXP TO SHIFT SW BY T+6 HRS. MVMT
AND HGT BASED ON VONA, WEBCAM OBS AND NWP MDLS.
...BERTALAN
NXT ADVISORY: WILL BE ISSUED BY 20250515/0215Z
Volcanic Ash Advisory issued on 2025-05-12 at 22:34 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission has disp.
  • Volcanic ash emission has disp in satellite imagery under clear conditions. No new emission observation. No reports of volcanic ash emission. Fisher.

Original Message :

Received FVXX25 at 22:36 UTC, 12/05/25 from KNES
VA ADVISORY
DTG: 20250512/2234Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/131
INFO SOURCE: GOES-18. WEBCAM. NWP MODELS. VOLCAT.
ERUPTION DETAILS: VA EMS HAS DISP
OBS VA DTG: 12/2200Z
OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA.
FCST VA CLD +6HR: 13/0400Z NO VA EXP
FCST VA CLD +12HR: 13/1000Z NO VA EXP
FCST VA CLD +18HR: 13/1600Z NO VA EXP
RMK: VA EMS HAS DISP IN STLT IMAGERY UNDER CLEAR
CONDITIONS. NO NEW EMS OBS. NO RPRTS OF VA EMS.
...FISHER
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-05-12 at 16:40 UTC.

    Key information extracted from original VAA message :


  • Poss light steam/gas/va emission.
  • Poss light steam/gas/va emission obsd in webcam. Ovsicori reported continuous seismic tremor. Volcanic ash not obsd in satellite due to meteorological volcanic ash /dct based on prev advisory and model guidance. Nwp model forecast through t+0hr. Zeng.

Original Message :

Received FVXX25 at 16:43 UTC, 12/05/25 from KNES
VA ADVISORY
DTG: 20250512/1640Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/130
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
OVSICORI-UNA.
ERUPTION DETAILS: POSS LGT STEAM/GAS/VA EMS
OBS VA DTG: 12/1610Z
OBS VA CLD: SFC/FL100 N1013 W08414 - N1011 W08413 - N1008 W08423 - N1011 W08424 - N1013 W08414 MOV W 15KT
FCST VA CLD +6HR: 12/2200Z NO VA EXP
FCST VA CLD +12HR: 13/0400Z NO VA EXP
FCST VA CLD +18HR: 13/1000Z NO VA EXP
RMK: POSS LGT STEAM/GAS/VA EMS OBSD IN WEBCAM.
OVSICORI REPORTED CONTINUOUS SEISMIC TREMOR. VA
NOT OBSD IN SAT DUE TO MET CLDS. VA FL/DCT BASED
ON PREV ADVY AND MDL GUIDANCE. NWP MDL FCST THRU
T+0HR. ...ZENG
NXT ADVISORY: WILL BE ISSUED BY 20250512/2245Z
Volcanic Ash Advisory issued on 2025-05-12 at 10:55 UTC.

    Key information extracted from original VAA message :


  • Likely volcanic ash emission continuing.
  • Volcanic ash ems/clds not seen in satellite due to meteorological but volcanic ash emission likely continuing. Volcanic ash ems/dct based on prev advisory and model guidance. Nwp model forecast little change through t+12hrs. Zeng.

Original Message :

Received FVXX25 at 10:57 UTC, 12/05/25 from KNES
VA ADVISORY
DTG: 20250512/1055Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/129
INFO SOURCE: GOES-18. NWP MODELS.
ERUPTION DETAILS: LKLY VA EMS CONTG
OBS VA DTG: 12/1030Z
OBS VA CLD: SFC/FL100 N1012 W08413 - N1010 W08413 - N1007 W08426 - N1012 W08426 - N1012 W08413 MOV W 15KT
FCST VA CLD +6HR: 12/1630Z SFC/FL100 N1012 W08413 - N1010 W08413 - N1007 W08423 - N1011 W08424 - N1012 W08413
FCST VA CLD +12HR: 12/2230Z NO VA EXP
FCST VA CLD +18HR: 13/0430Z NO VA EXP
RMK: VA EMS/CLDS NOT SEEN IN SAT DUE TO MET CLDS.
BUT VA EMS LKLY CONTG. VA EMS/DCT BASED ON PREV
ADVY AND MDL GUIDANCE. NWP MDL FCST LTLCG THRU
T+12HRS. ...ZENG
NXT ADVISORY: WILL BE ISSUED BY 20250512/1700Z
Volcanic Ash Advisory issued on 2025-05-12 at 05:07 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission obsd in webcam.
  • Volcanic ash emission obsd in webcam, but no volcanic ash emission obsd in satellite img due to meteorological a more w mvmt exp by t+12 hours. Mvmt and height based on webcam observation and nwp. Bertalan.

Original Message :

Received FVXX25 at 05:10 UTC, 12/05/25 from KNES
VA ADVISORY
DTG: 20250512/0507Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/128
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS OBSD IN WEBCAM
EST VA DTG: 12/0430Z
EST VA CLD: SFC/FL100 N1013 W08424 - N1013 W08413 - N1012 W08413 - N1007 W08422 - N1013 W08424 MOV SW 15KT
FCST VA CLD +6HR: 12/1030Z SFC/FL100 N1014 W08429 - N1014 W08413 - N1012 W08413 - N1005 W08426 - N1014 W08429
FCST VA CLD +12HR: 12/1630Z SFC/FL100 N1017 W08428 - N1013 W08413 - N1011 W08413 - N1008 W08427 - N1017 W08428
FCST VA CLD +18HR: 12/2230Z SFC/FL100 N1016 W08428 - N1013 W08413 - N1011 W08413 - N1007 W08427 - N1016 W08428
RMK: VA EMS OBSD IN WEBCAM, BUT NO VA EMS OBSD IN
STLT IMG DUE TO MET CLDS. A MORE W MVMT EXP BY T+12
HRS. MVMT AND HGT BASED ON WEBCAM OBS AND NWP
MDLS. ...BERTALAN
NXT ADVISORY: WILL BE ISSUED BY 20250512/1100Z
Volcanic Ash Advisory issued on 2025-05-11 at 23:21 UTC.

    Key information extracted from original VAA message :


  • Ongoing volcanic ash emission.
  • Volcanic ash not detected on satellite due to weather clouds in summit area. Minor volcanic ash emission likely continue recent activity. No change forecast to model winds at next 18 hour. Konon.

Original Message :

Received FVXX25 at 23:23 UTC, 11/05/25 from KNES
VA ADVISORY
DTG: 20250511/2321Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/127
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: ONGOING VA EMS
EST VA DTG: 11/2250Z
EST VA CLD: SFC/FL100 N1014 W08420 - N1011 W08413 - N1011 W08413 - N1010 W08420 - N1014 W08420 MOV W 10KT
FCST VA CLD +6HR: 12/0500Z SFC/FL100 N1014 W08420 - N1012 W08414 - N1011 W08413 - N1010 W08420 - N1014 W08420
FCST VA CLD +12HR: 12/1100Z SFC/FL100 N1014 W08419 - N1012 W08413 - N1011 W08413 - N1010 W08419 - N1014 W08419
FCST VA CLD +18HR: 12/1700Z SFC/FL100 N1014 W08420 - N1012 W08413 - N1011 W08414 - N1010 W08420 - N1014 W08420
RMK: VA NOT DETECTED ON STLT DUE TO WX CLDS IN
SUMMIT AREA. MINOR VA EMS LIKELY CONTINUE GIVEN
RECENT ACTVTY. NO CHG FCST TO MDL WINDS AT FL NXT
18 HR. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250512/0515Z
Volcanic Ash Advisory issued on 2025-05-11 at 17:25 UTC.

    Key information extracted from original VAA message :


  • Continuous emission obsd.
  • Webcam continues to show continuous steam and gas emission with light volcanic ash included. No clear volcanic ash signature obsd by satellite. Nwp models forecast volcanic ash to continue moving wsw through t+18hrs. Hosley.

Original Message :

Received FVXX25 at 17:27 UTC, 11/05/25 from KNES
VA ADVISORY
DTG: 20250511/1725Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/126
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: CONS EMS OBSD.
OBS VA DTG: 11/1700Z
OBS VA CLD: SFC/FL100 N1012 W08413 - N1011 W08413 - N1009 W08416 - N1012 W08418 - N1012 W08413 MOV W 10KT
FCST VA CLD +6HR: 11/2300Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1008 W08417 - N1011 W08419 - N1012 W08413
FCST VA CLD +12HR: 12/0500Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1008 W08417 - N1011 W08419 - N1012 W08414
FCST VA CLD +18HR: 12/1100Z SFC/FL100 N1013 W08419 - N1012 W08413 - N1011 W08413 - N1008 W08418 - N1013 W08419
RMK: WEBCAM CONTINUES TO SHOW CONS STEAM AND GAS
EMS WITH LGT VA INCLUDED. NO CLR VA SIG OBSD BY
STLT. NWP MDLS FCST VA TO CONT MOVG WSW THRU
T+18HRS. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250511/2330Z
Volcanic Ash Advisory issued on 2025-05-11 at 11:45 UTC.

    Key information extracted from original VAA message :


  • Continuous emission obsd.
  • Webcam shows continuous emission of mainly vapor and gas with light amts of volcanic ash within. Volcanic ash not obsd by satellite. Estd from webcam and nwp models which forecast volcanic ash to move wsw by t+12hrs. Hosley.

Original Message :

Received FVXX25 at 11:46 UTC, 11/05/25 from KNES
VA ADVISORY
DTG: 20250511/1145Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/125
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: CONS EMS OBSD.
OBS VA DTG: 11/1120Z
OBS VA CLD: SFC/FL100 N1013 W08420 - N1012 W08413 - N1011 W08414 - N1010 W08420 - N1013 W08420 MOV W 10KT
FCST VA CLD +6HR: 11/1730Z SFC/FL100 N1013 W08420 - N1012 W08413 - N1011 W08413 - N1010 W08420 - N1013 W08420
FCST VA CLD +12HR: 11/2330Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1008 W08420 - N1012 W08420 - N1012 W08413
FCST VA CLD +18HR: 12/0530Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1008 W08419 - N1012 W08420 - N1012 W08414
RMK: WEBCAM SHOWS CONS EMS OF MAINLY VAPOR AND
GAS WITH LGT AMTS OF VA WITHIN. VA NOT OBSD BY
STLT. FL ESTD FM WEBCAM AND NWP MDLS WHICH FCST
VA TO MOV WSW BY T+12HRS. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250511/1745Z
Volcanic Ash Advisory issued on 2025-05-11 at 05:43 UTC.

    Key information extracted from original VAA message :


  • Light volcanic ash emission obsd.
  • Volcanic ash emission obsd in webcam and satellite img extg apprx 10 nm w from summit. A more wsw mvmt exp by t+6 hours. Mvmt and height based on webcam, satellite observation and nwp. Bertalan.

Original Message :

Received FVXX25 at 05:46 UTC, 11/05/25 from KNES
VA ADVISORY
DTG: 20250511/0543Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/124
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: LGT VA EMS OBSD
OBS VA DTG: 11/0520Z
OBS VA CLD: SFC/FL110 N1015 W08423 - N1013 W08414 - N1011 W08413 - N1008 W08423 - N1015 W08423 MOV W 10KT
FCST VA CLD +6HR: 11/1130Z SFC/FL110 N1015 W08431 - N1013 W08414 - N1011 W08413 - N1005 W08430 - N1015 W08431
FCST VA CLD +12HR: 11/1730Z SFC/FL110 N1014 W08430 - N1013 W08413 - N1011 W08413 - N1005 W08429 - N1014 W08430
FCST VA CLD +18HR: 11/2330Z SFC/FL110 N1013 W08430 - N1013 W08413 - N1011 W08413 - N1005 W08429 - N1013 W08430
RMK: VA EMS OBSD IN WEBCAM AND STLT IMG EXTG
APPRX 10 NM W FM SUMMIT. A MORE WSW MVMT EXP BY
T+6 HRS. MVMT AND HGT BASED ON WEBCAM, STLT OBS
AND NWP MDLS. ...BERTALAN
NXT ADVISORY: WILL BE ISSUED BY 20250511/1145Z
Volcanic Ash Advisory issued on 2025-05-11 at 00:16 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ongoing.
  • Volcanic ash not detected on satellite due to weather clouds in summit area. Webcam shows continuous steam/gas emission with some volcanic ash. No change forecast to model winds at next 18 hour. Konon.

Original Message :

Received FVXX25 at 00:18 UTC, 11/05/25 from KNES
VA ADVISORY
DTG: 20250511/0016Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/123
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS ONGOING
EST VA DTG: 10/2350Z
EST VA CLD: SFC/FL110 N1014 W08420 - N1012 W08413 - N1011 W08414 - N1011 W08420 - N1014 W08420 MOV W 10KT
FCST VA CLD +6HR: 11/0600Z SFC/FL110 N1014 W08420 - N1012 W08414 - N1011 W08414 - N1010 W08420 - N1014 W08420
FCST VA CLD +12HR: 11/1200Z SFC/FL110 N1014 W08420 - N1012 W08414 - N1011 W08413 - N1010 W08420 - N1014 W08420
FCST VA CLD +18HR: 11/1800Z SFC/FL110 N1014 W08420 - N1012 W08413 - N1011 W08413 - N1010 W08420 - N1014 W08420
RMK: VA NOT DETECTED ON STLT DUE TO WX CLDS
IN SUMMIT AREA. WEBCAM SHOWS CONS STEAM/GAS EMS
WITH SOME VA. NO CHG FCST TO MDL WINDS AT FL NXT
18 HR. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250511/0615Z
Volcanic Ash Advisory issued on 2025-05-10 at 18:24 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ongoing.
  • Volcanic ash not detected on satellite due to weather clouds in summit area. Webcam shows continuous steam/gas emission with some volcanic ash. No change forecast to model winds at next 18 hour. Konon.

Original Message :

Received FVXX25 at 18:27 UTC, 10/05/25 from KNES
VA ADVISORY
DTG: 20250510/1824Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/122
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS ONGOING
EST VA DTG: 10/1800Z
EST VA CLD: SFC/FL110 N1014 W08422 - N1012 W08413 - N1011 W08413 - N1010 W08422 - N1014 W08422 MOV W 10KT
FCST VA CLD +6HR: 11/0000Z SFC/FL110 N1014 W08422 - N1012 W08414 - N1011 W08414 - N1010 W08422 - N1014 W08422
FCST VA CLD +12HR: 11/0600Z SFC/FL110 N1014 W08422 - N1012 W08414 - N1011 W08414 - N1010 W08422 - N1014 W08422
FCST VA CLD +18HR: 11/1200Z SFC/FL110 N1014 W08422 - N1012 W08413 - N1011 W08413 - N1010 W08422 - N1014 W08422
RMK: VA NOT DETECTED ON STLT DUE TO WX CLDS IN
SUMMIT AREA. WEBCAM SHOWS CONS STEAM/GAS EMS
WITH SOME VA. NO CHG FCST TO MDL WINDS AT FL NXT
18 HR. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250511/0030Z
Volcanic Ash Advisory issued on 2025-05-10 at 12:49 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash possibly obsd.
  • Webcam mainly obscured but does show hint of emission. Uncertainty exists on volcanic ash content. Volcanic ash not.

Original Message :

Received FVXX25 at 12:52 UTC, 10/05/25 from KNES
VA ADVISORY
DTG: 20250510/1249Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/121
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA PSBLY OBSD.
OBS VA DTG: 10/1220Z
OBS VA CLD: SFC/FL110 N1013 W08419 - N1012 W08414 - N1011 W08413 - N1010 W08419 - N1013 W08419 MOV W 10KT
W 10KT
FCST VA CLD +6HR: 10/1830Z SFC/FL110 N1016 W08422 - N1012 W08413 - N1011 W08413 - N1011 W08423 - N1016 W08422
N1016 W08422
FCST VA CLD +12HR: 11/0030Z SFC/FL110 N1013 W08422 - N1012 W08413 - N1011 W08413 - N1008 W08422 - N1013 W08422
W08422 - N1013 W08422
FCST VA CLD +18HR: 11/0630Z NO VA EXP
RMK: WEBCAM MAINLY OBSCD BUT DOES SHOW HINT OF
EMS. UNCERTAINTY EXISTS ON VA CONTENT. VA NOT
OBSD BY STLT EVEN WITH A FEW SML BINOVC DOWNWIND
OF SUMMIT. NWP MDLS FCST VA TO MOV WNW BY T+6
THEN BACK TO WSW BY T+12. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250510/1845Z
Volcanic Ash Advisory issued on 2025-05-10 at 07:04 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash remains possible.
  • Ongoing volcanic ash emission possible w of summit but no volcanic ash crntly observation in satellite imagery or webcam. Volcanic ash forecast through t+12 hours based on nwp model guidance. Coverdale.

Original Message :

Received FVXX25 at 07:07 UTC, 10/05/25 from KNES
VA ADVISORY
DTG: 20250510/0704Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/120
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA REMAINS PSBL
OBS VA DTG: 10/0640Z
OBS VA CLD: SFC/FL110 N1014 W08419 - N1013 W08414 - N1011 W08413 - N1010 W08419 - N1014 W08419 MOV W 10KT
W 10KT
FCST VA CLD +6HR: 10/1230Z SFC/FL110 N1015 W08424 - N1013 W08413 - N1011 W08413 - N1008 W08423 - N1015 W08424
N1015 W08424
FCST VA CLD +12HR: 10/1830Z SFC/FL110 N1016 W08421 - N1012 W08414 - N1011 W08413 - N1009 W08422 - N1016 W08421
W08422 - N1016 W08421
FCST VA CLD +18HR: 11/0030Z NO VA EXP
RMK: ONGOING VA EMS PSBL W OF SUMMIT BUT NO VA
CRNTLY OBS IN STLT IMAGERY OR WEBCAM. VA FCST
THRU T+12 HRS BASED ON NWP MDL GUIDANCE.
...COVERDALE
NXT ADVISORY: WILL BE ISSUED BY 20250510/1300Z
Volcanic Ash Advisory issued on 2025-05-10 at 01:15 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ongoing.
  • Volcanic ash not detected on various satellite products due to weather clouds in summit area. Volcanic ash emission likely continue recent activity. No change forecast to model winds at next 18 hour. Konon.

Original Message :

Received FVXX25 at 01:17 UTC, 10/05/25 from KNES
VA ADVISORY
DTG: 20250510/0115Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/119
INFO SOURCE: GOES-19.
ERUPTION DETAILS: VA EMS ONGOING
EST VA DTG: 10/0050Z
EST VA CLD: SFC/FL110 N1014 W08420 - N1012 W08414 - N1011 W08414 - N1010 W08421 - N1014 W08420 MOV W 10KT
FCST VA CLD +6HR: 10/0700Z SFC/FL110 N1014 W08421 - N1011 W08414 - N1011 W08414 - N1010 W08421 - N1014 W08421
FCST VA CLD +12HR: 10/1300Z SFC/FL110 N1014 W08420 - N1012 W08414 - N1011 W08413 - N1010 W08420 - N1014 W08420
FCST VA CLD +18HR: 10/1900Z SFC/FL110 N1014 W08420 - N1012 W08413 - N1011 W08414 - N1010 W08420 - N1014 W08420
RMK: VA NOT DETECTED ON VARIOUS STLT PRODUCTS DUE
TO WX CLDS IN SUMMIT AREA. VA EMS LIKELY CONTINUE
GIVEN RECENT ACTVTY. NO CHG FCST TO MDL WINDS AT
FL NXT 18 HR. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250510/0715Z
Volcanic Ash Advisory issued on 2025-05-09 at 19:30 UTC.

    Key information extracted from original VAA message :


  • Ongoing volcanic ash emission.
  • Volcanic ash not detected on satellite due to weather clouds in summit area. Webcam shows volcanic ash emission. No change forecast to model winds at next 18 hour. Konon.

Original Message :

Received FVXX25 at 19:33 UTC, 09/05/25 from KNES
VA ADVISORY
DTG: 20250509/1930Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/118
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: ONGOING VA EMS
EST VA DTG: 09/1910Z
EST VA CLD: SFC/FL110 N1014 W08421 - N1012 W08413 - N1011 W08414 - N1010 W08421 - N1014 W08421 MOV W 5KT
FCST VA CLD +6HR: 10/0100Z SFC/FL110 N1015 W08422 - N1012 W08413 - N1011 W08414 - N1010 W08421 - N1015 W08422
FCST VA CLD +12HR: 10/0700Z SFC/FL110 N1015 W08421 - N1011 W08413 - N1011 W08414 - N1010 W08421 - N1015 W08421
FCST VA CLD +18HR: 10/1300Z SFC/FL110 N1015 W08422 - N1011 W08413 - N1011 W08413 - N1010 W08421 - N1015 W08422
RMK: VA NOT DETECTED ON STLT DUE TO WX CLDS IN
SUMMIT AREA. WEBCAM SHOWS VA EMS. NO CHG FCST TO
MDL WINDS AT FL NXT 18 HR. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250510/0130Z
Volcanic Ash Advisory issued on 2025-05-09 at 13:39 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Possible volcanic ash emission w of summit. Volcanic ash not observation in satellite imagery due to weather possible volcanic ash forecast to continue move w of summit through t+6hrs before disp. Volcano activity low. Fisher.

Original Message :

Received FVXX25 at 13:42 UTC, 09/05/25 from KNES
VA ADVISORY
DTG: 20250509/1339Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/117
INFO SOURCE: GOES-18. WEBCAM. NWP MODELS. VOLCAT.
ERUPTION DETAILS: PSBL VA EMS
OBS VA DTG: 09/1310Z
OBS VA CLD: SFC/FL110 N1013 W08416 - N1012 W08413 - N1011 W08417 - N1013 W08416 MOV W 10KT
FCST VA CLD +6HR: 09/1900Z SFC/FL110 N1013 W08416 - N1012 W08413 - N1011 W08417 - N1013 W08416
FCST VA CLD +12HR: 10/0100Z NO VA EXP
FCST VA CLD +18HR: 10/0700Z NO VA EXP
RMK: PSBL VA EMS W OF SUMMIT. VA NOT OBS IN STLT
IMAGERY DUE TO WX CLDS. PSBL VA FCST TO CONT MOV W
OF SUMMIT THRU T+6HRS BEFORE DISP. VO ACT LOW.
...FISHER
NXT ADVISORY: WILL BE ISSUED BY 20250509/1945Z
Volcanic Ash Advisory issued on 2025-05-09 at 08:08 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Volcanic ash emission possible general w from summit but volcanic ash not crntly observation in satellite imagery. Occasional steam/gas emission with possible light volcanic ash observation in webcam. Volcanic ash forecast through t+12 hours based on nwp. Coverdale.

Original Message :

Received FVXX25 at 08:10 UTC, 09/05/25 from KNES
VA ADVISORY
DTG: 20250509/0808Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/116
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
OBS VA DTG: 09/0730Z
OBS VA CLD: SFC/FL110 N1013 W08418 - N1012 W08413 - N1011 W08413 - N1009 W08417 - N1013 W08418 MOV W 10KT
FCST VA CLD +6HR: 09/1330Z SFC/FL110 N1015 W08420 - N1013 W08413 - N1011 W08413 - N1009 W08420 - N1015 W08420
FCST VA CLD +12HR: 09/1930Z SFC/FL110 N1015 W08419 - N1013 W08413 - N1011 W08413 - N1008 W08419 - N1015 W08419
FCST VA CLD +18HR: 10/0130Z NO VA EXP
RMK: VA EMS REMAIN PSBL GEN W FM SUMMIT BUT VA
NOT CRNTLY OBS IN STLT IMAGERY. OCNL STEAM/GAS
EMS WITH PSBL LGT VA OBS IN WEBCAM. VA FCST THRU
T+12 HRS BASED ON NWP MDLS. ...COVERDALE
NXT ADVISORY: WILL BE ISSUED BY 20250509/1415Z
Volcanic Ash Advisory issued on 2025-05-09 at 02:08 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ongoing.
  • Volcanic ash not detected on satellite due to weather clouds in summit area. Volcanic ash emission likely continue recent activity. Model winds at forecast to veer over next 18 hour eventually becoming more from the se. Konon.

Original Message :

Received FVXX25 at 02:10 UTC, 09/05/25 from KNES
VA ADVISORY
DTG: 20250509/0208Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/115
INFO SOURCE: GOES-19.
ERUPTION DETAILS: VA EMS ONGOING
EST VA DTG: 09/0140Z
EST VA CLD: SFC/FL110 N1012 W08414 - N1011 W08413 - N1007 W08415 - N1009 W08418 - N1012 W08414 MOV SW 10KT
FCST VA CLD +6HR: 09/0730Z SFC/FL110 N1012 W08414 - N1011 W08413 - N1008 W08417 - N1011 W08420 - N1012 W08414
FCST VA CLD +12HR: 09/1330Z SFC/FL110 N1014 W08420 - N1012 W08414 - N1011 W08413 - N1010 W08420 - N1014 W08420
FCST VA CLD +18HR: 09/1930Z SFC/FL110 N1017 W08418 - N1012 W08413 - N1011 W08414 - N1013 W08420 - N1017 W08418
RMK: VA NOT DETECTED ON STLT DUE TO WX CLDS IN
SUMMIT AREA. VA EMS LIKELY CONTINUE GIVEN RECENT
ACTVTY. MDL WINDS AT FL FCST TO VEER OVR NXT 18
HR EVENTUALLY BECMG MORE FM THE SE. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250509/0815Z
Volcanic Ash Advisory issued on 2025-05-08 at 20:21 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ongoing.
  • Correction 2 for webcam observation and new vona repeat. Volcanic ash not detected on satellite due to weather clouds in summit area. Webcam shows increase volcanic ash emission last observation before a break in coverage at a manual station hour and vona confirms. Model winds at forecast to veer by t+18 hour becoming more from the e. Konon.

Original Message :

Received FVXX25 at 20:23 UTC, 08/05/25 from KNES
VA ADVISORY -CORRECTION
DTG: 20250508/2021Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/114
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS ONGOING
EST VA DTG: 08/1940Z
EST VA CLD: SFC/FL120 N1013 W08413 - N1011 W08414 - N1006 W08419 - N1010 W08422 - N1013 W08413 MOV W 10KT
W 10KT
FCST VA CLD +6HR: 09/0130Z SFC/FL120 N1013 W08413 - N1011 W08413 - N1006 W08419 - N1011 W08422 - N1013 W08413
N1013 W08413
FCST VA CLD +12HR: 09/0730Z SFC/FL120 N1012 W08414 - N1012 W08413 - N1005 W08420 - N1011 W08423 - N1012 W08414
W08423 - N1012 W08414
FCST VA CLD +18HR: 09/1330Z SFC/FL120 N1013 W08425 - N1012 W08414 - N1011 W08414 - N1008 W08424 - N1013 W08425
W08424 - N1013 W08425
RMK: COR 2 FOR WEBCAM OBS AND NEW VONA RPT. VA
NOT DETECTED ON STLT DUE TO WX CLDS IN SUMMIT
AREA. WEBCAM SHOWS INCR VA EMS LAST HR AND VONA
CONFIRMS. MDL WINDS AT FL FCST TO VEER BY T+18
HR BECMG MORE FM THE E. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250509/0215Z
Volcanic Ash Advisory issued on 2025-05-08 at 14:09 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Emission of gas and steam with possible light volcanic ash emission mixed in observation in webcam. Volcanic ash not detected in satellite img. Wsw mvmt to shift southwest by t+12. Forecast based on model guidance. Gatling.

Original Message :

Received FVXX25 at 14:11 UTC, 08/05/25 from KNES
VA ADVISORY
DTG: 20250508/1409Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/113
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
EST VA DTG: 08/1330Z
EST VA CLD: SFC/FL100 N1013 W08425 - N1013 W08413 - N1011 W08413 - N1007 W08425 - N1013 W08425 MOV W 10KT
FCST VA CLD +6HR: 08/1930Z SFC/FL100 N1013 W08431 - N1012 W08413 - N1011 W08413 - N1007 W08429 - N1013 W08431
FCST VA CLD +12HR: 09/0130Z SFC/FL100 N1013 W08414 - N1011 W08413 - N1001 W08426 - N1007 W08429 - N1013 W08414
FCST VA CLD +18HR: 09/0730Z NO VA EXP
RMK: EMS OF GAS AND STEAM WITH PSBL LGT VA EMS
MIXED IN OBS IN WEBCAM. VA NOT DETECTED IN STLT
IMG. WSW MVMT TO SHIFT SW BY T+12. FCST BASED ON
MDL GUIDANCE. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250508/2015Z
Volcanic Ash Advisory issued on 2025-05-08 at 08:18 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Steam/gas emission with possible light volcanic ash mixed in observation in webcam. Volcanic ash not observation in satellite imagery. Volcanic ash forecast through t+12 hours based on nwp. Coverdale.

Original Message :

Received FVXX25 at 08:21 UTC, 08/05/25 from KNES
VA ADVISORY
DTG: 20250508/0818Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/112
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
OBS VA DTG: 08/0800Z
OBS VA CLD: SFC/FL100 N1014 W08419 - N1013 W08413 - N1012 W08413 - N1007 W08417 - N1014 W08419 MOV W 5KT
FCST VA CLD +6HR: 08/1400Z SFC/FL100 N1015 W08425 - N1012 W08413 - N1011 W08413 - N1006 W08425 - N1015 W08425
FCST VA CLD +12HR: 08/2000Z SFC/FL100 N1013 W08422 - N1012 W08413 - N1011 W08413 - N1005 W08420 - N1013 W08422
FCST VA CLD +18HR: 09/0200Z NO VA EXP
RMK: STEAM/GAS EMS WITH PSBL LGT VA MIXED IN OBS
IN WEBCAM. VA NOT OBS IN STLT IMAGERY. VA FCST
THRU T+12 HRS BASED ON NWP MDLS. ...COVERDALE
NXT ADVISORY: WILL BE ISSUED BY 20250508/1415Z
Volcanic Ash Advisory issued on 2025-05-08 at 02:26 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Volcanic ash not crntly observation in satellite imagery or webcam. Volcanic ash emission possible to the wsw of summit. Volcanic ash forecast through t+12 hours based on nwp. Coverdale.

Original Message :

Received FVXX25 at 02:29 UTC, 08/05/25 from KNES
VA ADVISORY
DTG: 20250508/0226Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/111
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
OBS VA DTG: 08/0200Z
OBS VA CLD: SFC/FL100 N1014 W08420 - N1013 W08413 - N1011 W08413 - N1008 W08418 - N1014 W08420 MOV W 10KT
FCST VA CLD +6HR: 08/0800Z SFC/FL100 N1013 W08413 - N1011 W08413 - N1003 W08420 - N1010 W08425 - N1013 W08413
FCST VA CLD +12HR: 08/1400Z SFC/FL100 N1014 W08423 - N1013 W08413 - N1011 W08413 - N1008 W08422 - N1014 W08423
FCST VA CLD +18HR: 08/2000Z NO VA EXP
RMK: VA NOT CRNTLY OBS IN STLT IMAGERY OR WEBCAM.
VA EMS REMAIN PSBL TO THE WSW OF SUMMIT. VA FCST
THRU T+12 HRS BASED ON NWP MDLS. ...COVERDALE
NXT ADVISORY: WILL BE ISSUED BY 20250508/0830Z
Volcanic Ash Advisory issued on 2025-05-07 at 20:46 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ongoing.
  • Volcanic ash not detected on satellite due to weather clouds in summit area. Volcanic ash emission likely continue recent activity. Model winds at forecast to back over.

Original Message :

Received FVXX25 at 20:49 UTC, 07/05/25 from KNES
VA ADVISORY
DTG: 20250507/2046Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/110
INFO SOURCE: GOES-19.
ERUPTION DETAILS: VA EMS ONGOING
EST VA DTG: 07/2020Z
EST VA CLD: SFC/FL100 N1016 W08423 - N1012 W08413 - N1011 W08413 - N1009 W08423 - N1016 W08423 MOV W 10KT
FCST VA CLD +6HR: 08/0230Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1005 W08422 - N1012 W08423 - N1012 W08413
FCST VA CLD +12HR: 08/0830Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1004 W08422 - N1011 W08423 - N1012 W08413
FCST VA CLD +18HR: 08/1430Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1004 W08421 - N1010 W08423 - N1012 W08413
RMK: VA NOT DETECTED ON STLT DUE TO WX CLDS IN
SUMMIT AREA. VA EMS LIKELY CONTINUE GIVEN
RECENT ACTVTY. MDL WINDS AT FL FCST TO BACK OVR
NXT 12 HR BECMG MORE FM THE ENE. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250508/0245Z
Volcanic Ash Advisory issued on 2025-05-07 at 15:04 UTC.

    Key information extracted from original VAA message :


  • Light volcanic ash emission continue.
  • Volcanic ash emission observation in webcam. Volcanic ash not detected in satellite img. Model guidance suggests wnw mvmt from summit to shift southwest by t+12. Gatling.

Original Message :

Received FVXX25 at 15:06 UTC, 07/05/25 from KNES
VA ADVISORY
DTG: 20250507/1504Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/109
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: LGT VA EMS CONT
EST VA DTG: 07/1430Z
EST VA CLD: SFC/FL100 N1018 W08421 - N1012 W08413 - N1011 W08414 - N1014 W08423 - N1018 W08421 MOV NW 5KT
FCST VA CLD +6HR: 07/2030Z SFC/FL100 N1014 W08426 - N1012 W08413 - N1011 W08414 - N1009 W08426 - N1014 W08426
FCST VA CLD +12HR: 08/0230Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1002 W08421 - N1007 W08425 - N1012 W08414
FCST VA CLD +18HR: 08/0830Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1003 W08423 - N1008 W08426 - N1012 W08413
RMK: VA EMS OBS IN WEBCAM. VA NOT DETECTED IN
STLT IMG. MDL GUIDANCE SUGGESTS WNW MVMT FM
SUMMIT TO SHIFT SW BY T+12. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250507/2100Z
Volcanic Ash Advisory issued on 2025-05-07 at 09:29 UTC.

    Key information extracted from original VAA message :


  • Continuous light volcanic ash emission.
  • Continuous emission of steam gas and light volcanic ash continue on webcam. Volcanic ash not obsd by satellite partly due to weather cloud cover. Nwp models forecast volcanic ash to move wnw at t+6 but to move wsw by t+12. Hosley.

Original Message :

Received FVXX25 at 09:30 UTC, 07/05/25 from KNES
VA ADVISORY
DTG: 20250507/0929Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/108
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: CONS LGT VA EMS.
OBS VA DTG: 07/0850Z
OBS VA CLD: SFC/FL100 N1012 W08413 - N1011 W08413 - N1008 W08418 - N1011 W08420 - N1012 W08413 MOV W 10KT
FCST VA CLD +6HR: 07/1500Z SFC/FL100 N1016 W08422 - N1012 W08413 - N1011 W08413 - N1011 W08423 - N1016 W08422
FCST VA CLD +12HR: 07/2100Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1006 W08419 - N1010 W08422 - N1012 W08413
FCST VA CLD +18HR: 08/0300Z SFC/FL100 N1013 W08414 - N1011 W08413 - N1005 W08421 - N1012 W08423 - N1013 W08414
RMK: CONS EMS OF STEAM GAS AND LGT VA CONT ON
WEBCAM. VA NOT OBSD BY STLT PTLY DUE TO WX CLD
CVR. NWP MDLS FCST VA TO MOV WNW AT T+6 BUT
RETURN TO MOV WSW BY T+12. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250507/1530Z
Volcanic Ash Advisory issued on 2025-05-07 at 03:29 UTC.

    Key information extracted from original VAA message :


  • Continuous light volcanic ash emission.
  • Volcanic ash not obsd by satellite partly due to weather cloud cover. Webcam shows strong incandescence with emission of steam gas and light volcanic ash. Nwp models forecast volcanic ash to move w by t+12hrs. Hosley.

Original Message :

Received FVXX25 at 03:30 UTC, 07/05/25 from KNES
VA ADVISORY
DTG: 20250507/0329Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/107
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: CONS LGT VA EMS.
OBS VA DTG: 07/0300Z
OBS VA CLD: SFC/FL100 N1012 W08413 - N1011 W08413 - N1008 W08417 - N1011 W08419 - N1012 W08413 MOV SW 10KT
FCST VA CLD +6HR: 07/0900Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1007 W08418 - N1011 W08420 - N1012 W08414
FCST VA CLD +12HR: 07/1500Z SFC/FL100 N1014 W08420 - N1012 W08413 - N1011 W08413 - N1010 W08421 - N1014 W08420
FCST VA CLD +18HR: 07/2100Z SFC/FL100 N1013 W08423 - N1012 W08414 - N1011 W08413 - N1009 W08422 - N1013 W08423
RMK: VA NOT OBSD BY STLT PTLY DUE TO WX CLD CVR.
WEBCAM SHOWS STRONG INCANDESCENCE WITH EMS OF
STEAM GAS AND LGT VA. NWP MDLS FCST VA TO MOV W
BY T+12HRS. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250507/0930Z
Volcanic Ash Advisory issued on 2025-05-06 at 21:31 UTC.

    Key information extracted from original VAA message :


  • Light volcanic ash emission possible.
  • Light volcanic ash emission possible move southwest from summit. Possible volcanic ash emission obscure by weather possible volcanic ash forecast to continue southwest move southwest of summit through t+6hrs before disp. Volcano activity low. Fisher.

Original Message :

Received FVXX25 at 21:34 UTC, 06/05/25 from KNES
VA ADVISORY
DTG: 20250506/2131Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/106
INFO SOURCE: GOES-18. WEBCAM. NWP MODELS. VOLCAT.
ERUPTION DETAILS: LGT VA EMS PSBL
OBS VA DTG: 06/2100Z
OBS VA CLD: SFC/FL100 N1012 W08413 - N1010 W08415 - N1011 W08416 - N1012 W08413 MOV SW 5KT
FCST VA CLD +6HR: 07/0300Z SFC/FL100 N1012 W08413 - N1010 W08415 - N1011 W08416 - N1012 W08413
FCST VA CLD +12HR: 07/0900Z NO VA EXP
FCST VA CLD +18HR: 07/1500Z NO VA EXP
RMK: LGT VA EMS PSBL MOV SW FM SUMMIT. PSBL VA
EMS OBSC BY WX CLDS. PSBL VA FCST TO CONT SW MOV
SW OF SUMMIT THRU T+6HRS BEFORE DISP. VO ACT LOW.
...FISHER
NXT ADVISORY: WILL BE ISSUED BY 20250507/0330Z
Volcanic Ash Advisory issued on 2025-05-06 at 15:48 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Mostly steam and gases noted in webcam, although occasional periods of light volcanic ash possible. Volcanic ash drifting to the southwest and near the summit. Lee.

Original Message :

Received FVXX25 at 15:50 UTC, 06/05/25 from KNES
VA ADVISORY
DTG: 20250506/1548Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/105
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: POSSIBLE VA EMS.
OBS VA DTG: 06/1510Z
OBS VA CLD: SFC/FL100 N1014 W08414 - N1011 W08412 - N1008 W08417 - N1012 W08417 - N1014 W08414 MOV SW 5KT
FCST VA CLD +6HR: 06/2100Z SFC/FL100 N1017 W08416 - N1013 W08413 - N1011 W08413 - N1012 W08418 - N1017 W08416
FCST VA CLD +12HR: 07/0300Z SFC/FL100 N1014 W08417 - N1014 W08412 - N1010 W08412 - N1009 W08418 - N1014 W08417
FCST VA CLD +18HR: 07/0900Z NO VA EXP
RMK: MOSTLY STEAM AND GASES NOTED IN WEBCAM,
ALTHOUGH OCCASIONAL PERIODS OF LIGHT VA POSSIBLE.
VA DRIFTING TO THE SW AND NEAR THE SUMMIT. ...LEE
NXT ADVISORY: WILL BE ISSUED BY 20250506/2145Z
Volcanic Ash Advisory issued on 2025-05-06 at 10:14 UTC.

    Key information extracted from original VAA message :


  • Light volcanic ash emission continuing.
  • Webcam shows emission of mainly steam and gas with small amounts of volcanic ash contained within. Summit.

Original Message :

Received FVXX25 at 10:16 UTC, 06/05/25 from KNES
VA ADVISORY
DTG: 20250506/1014Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/104
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: LGT VA EMS CONTG.
OBS VA DTG: 06/0940Z
OBS VA CLD: SFC/FL110 N1012 W08414 - N1011 W08413 - N1007 W08416 - N1009 W08418 - N1012 W08414 MOV W 10KT
FCST VA CLD +6HR: 06/1530Z SFC/FL110 N1013 W08419 - N1012 W08413 - N1011 W08413 - N1010 W08419 - N1013 W08419
FCST VA CLD +12HR: 06/2130Z SFC/FL110 N1013 W08420 - N1012 W08413 - N1011 W08413 - N1009 W08420 - N1013 W08420
FCST VA CLD +18HR: 07/0330Z SFC/FL110 N1012 W08414 - N1011 W08413 - N1007 W08419 - N1011 W08420 - N1012 W08414
RMK: WEBCAM SHOWS EMS OF MAINLY STEAM AND GAS
WITH SMALL AMOUNTS OF VA CONTAINED WITHIN. SUMMIT
OBSCD BY WX CLD ON STLT. NWP MDLS FCST VA TO MOV
W BY T+6 THEN RETURN TO WSW MOVMT BY T+18.
...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250506/1615Z
Volcanic Ash Advisory issued on 2025-05-06 at 04:11 UTC.

    Key information extracted from original VAA message :


  • Continuous light volcanic ash emission.
  • Continuous emission of steam gas and light volcanic ash obsd by webcam moving southwest. Faint volcanic ash signature possibly obsd southwest of summit. Nwp models forecast volcanic ash to move w by t+12hrs. Hosley.

Original Message :

Received FVXX25 at 04:14 UTC, 06/05/25 from KNES
VA ADVISORY
DTG: 20250506/0411Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/103
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: CONS LGT VA EMS.
OBS VA DTG: 06/0340Z
OBS VA CLD: SFC/FL110 N1012 W08414 - N1012 W08413 - N1005 W08417 - N1007 W08420 - N1012 W08414 MOV SW 10KT
FCST VA CLD +6HR: 06/0930Z SFC/FL110 N1012 W08414 - N1012 W08413 - N1001 W08418 - N1004 W08423 - N1012 W08414
FCST VA CLD +12HR: 06/1530Z SFC/FL110 N1014 W08425 - N1012 W08413 - N1011 W08413 - N1008 W08425 - N1014 W08425
FCST VA CLD +18HR: 06/2130Z SFC/FL110 N1015 W08425 - N1012 W08413 - N1011 W08413 - N1008 W08426 - N1015 W08425
RMK: CONS EMS OF STEAM GAS AND LGT VA OBSD BY
WEBCAM MOVG SW. FAINT VA SIG PSBLY OBSD SW OF
SUMMIT. NWP MDLS FCST VA TO MOV W BY T+12HRS.
...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250506/1015Z
Volcanic Ash Advisory issued on 2025-05-05 at 22:10 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ongoing.
  • Volcanic ash not detected on satellite due to weather clouds in summit area. Webcam shows volcanic ash emission. Model winds at forecast to veer by t+12 becoming more from the e. Konon.

Original Message :

Received FVXX25 at 22:13 UTC, 05/05/25 from KNES
VA ADVISORY
DTG: 20250505/2210Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/102
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: VA EMS ONGOING
EST VA DTG: 05/2150Z
EST VA CLD: SFC/FL110 N1012 W08414 - N1011 W08413 - N1008 W08417 - N1011 W08419 - N1012 W08414 MOV W 10KT
FCST VA CLD +6HR: 06/0400Z SFC/FL110 N1012 W08413 - N1011 W08414 - N1008 W08417 - N1011 W08419 - N1012 W08413
FCST VA CLD +12HR: 06/1000Z SFC/FL110 N1013 W08419 - N1012 W08413 - N1011 W08413 - N1010 W08419 - N1013 W08419
FCST VA CLD +18HR: 06/1600Z SFC/FL110 N1013 W08419 - N1012 W08414 - N1011 W08414 - N1010 W08419 - N1013 W08419
RMK: VA NOT DETECTED ON STLT DUE TO WX CLDS IN
SUMMIT AREA. WEBCAM SHOWS VA EMS. MDL WINDS AT FL
FCST TO VEER BY T+12 BECMG MORE FM THE E. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250506/0415Z
Volcanic Ash Advisory issued on 2025-05-05 at 16:09 UTC.

    Key information extracted from original VAA message :


  • Ongoing volcanic ash emission.
  • Light volcanic ash emission observation in webcam. Volcanic ash not detected in satellite img. Model guidance suggests wsw mvmt from summit to shift southwest by t+6. Gatling.

Original Message :

Received FVXX25 at 16:12 UTC, 05/05/25 from KNES
VA ADVISORY
DTG: 20250505/1609Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/101
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: ONGOING VA EMS
EST VA DTG: 05/1540Z
EST VA CLD: SFC/FL110 N1013 W08425 - N1012 W08413 - N1011 W08414 - N1007 W08424 - N1013 W08425 MOV W 10KT
FCST VA CLD +6HR: 05/2130Z SFC/FL110 N1012 W08413 - N1011 W08413 - N1004 W08429 - N1012 W08431 - N1012 W08413
FCST VA CLD +12HR: 06/0330Z SFC/FL110 N1012 W08413 - N1011 W08413 - N0959 W08423 - N1004 W08429 - N1012 W08413
FCST VA CLD +18HR: 06/0930Z SFC/FL110 N1012 W08414 - N1011 W08413 - N0959 W08423 - N1004 W08429 - N1012 W08414
RMK: LGT VA EMS OBS IN WEBCAM. VA NOT DETECTED IN
STLT IMG. MDL GUIDANCE SUGGESTS WSW MVMT FM
SUMMIT TO SHIFT SW BY T+6. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250505/2215Z
Volcanic Ash Advisory issued on 2025-05-05 at 10:23 UTC.

    Key information extracted from original VAA message :


  • Continuous volcanic ash emission.
  • Webcam shows continuous emission with at least light volcanic ash content. Satellite shows likely volcanic ash signature moving southwest from summit. Nwp models forecast genl wsw to southwest movement through t+18hrs. Hosley.

Original Message :

Received FVXX25 at 10:25 UTC, 05/05/25 from KNES
VA ADVISORY
DTG: 20250505/1023Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/100
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: CONS VA EMS.
OBS VA DTG: 05/1000Z
OBS VA CLD: SFC/FL110 N1012 W08414 - N1011 W08413 - N1005 W08418 - N1008 W08421 - N1012 W08414 MOV SW 10KT
FCST VA CLD +6HR: 05/1600Z SFC/FL110 N1012 W08413 - N1011 W08413 - N1005 W08421 - N1010 W08424 - N1012 W08413
FCST VA CLD +12HR: 05/2200Z SFC/FL110 N1012 W08414 - N1011 W08413 - N1004 W08420 - N1009 W08423 - N1012 W08414
FCST VA CLD +18HR: 06/0400Z SFC/FL110 N1013 W08414 - N1011 W08413 - N1002 W08419 - N1008 W08424 - N1013 W08414
RMK: WEBCAM SHOWS CONS EMS WITH AT LEAST LGT VA
CONTENT. STLT SHOWS LKLY VA SIG MOVG SW FM
SUMMIT. NWP MDLS FCST GENL WSW TO SW MOVMT THRU
T+18HRS. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250505/1630Z
Volcanic Ash Advisory issued on 2025-05-05 at 04:27 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash em obsd.
  • Volcanic ash cloud seen by satellite moving wsw from summit to 10 nmi from summit. Vona reports ejecta and continuous volcanic ash emission. Webcam shows dark emission as well. Estd from nwp little change forecast in volcanic ash movement through t+18hrs. Hosley.

Original Message :

Received FVXX25 at 04:30 UTC, 05/05/25 from KNES
VA ADVISORY
DTG: 20250505/0427Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/099
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EM OBSD.
OBS VA DTG: 05/0350Z
OBS VA CLD: SFC/FL110 N1013 W08414 - N1011 W08413 - N1004 W08422 - N1008 W08425 - N1013 W08414 MOV SW 10KT
FCST VA CLD +6HR: 05/1000Z SFC/FL110 N1013 W08414 - N1011 W08413 - N1003 W08425 - N1010 W08429 - N1013 W08414
FCST VA CLD +12HR: 05/1600Z SFC/FL110 N1013 W08414 - N1011 W08413 - N1004 W08427 - N1012 W08429 - N1013 W08414
FCST VA CLD +18HR: 05/2200Z SFC/FL110 N1013 W08413 - N1011 W08413 - N1000 W08423 - N1010 W08430 - N1013 W08413
RMK: VA CLD SEEN BY STLT MOVG WSW FM SUMMIT TO 10
NMI FM SUMMIT. VONA RPRTS EJECTA AND CONTINUOUS
VA EMS. WEBCAM SHOWS DARK EMS AS WELL. FL ESTD FM
NWP MDLS. LTLCG FCST IN VA MOVMT THRU T+18HRS.
...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250505/1030Z
Volcanic Ash Advisory issued on 2025-05-04 at 22:29 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ongoing.
  • Volcanic ash not detected on satellite due to weather clouds in summmit area. Vona inidcates volcanic ash emission. Model winds at forecast to veer next 18 hour eventually becoming more from the e. Konon.

Original Message :

Received FVXX25 at 22:31 UTC, 04/05/25 from KNES
VA ADVISORY
DTG: 20250504/2229Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/098
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS ONGOING
OBS VA DTG: 04/2200Z
OBS VA CLD: SFC/FL110 N1012 W08414 - N1011 W08413 - N1008 W08415 - N1010 W08417 - N1012 W08414 MOV SW 10KT
FCST VA CLD +6HR: 05/0400Z SFC/FL110 N1012 W08414 - N1012 W08413 - N1009 W08416 - N1011 W08419 - N1012 W08414
FCST VA CLD +12HR: 05/1000Z SFC/FL110 N1012 W08414 - N1011 W08413 - N1010 W08417 - N1012 W08419 - N1012 W08414
FCST VA CLD +18HR: 05/1600Z SFC/FL110 N1014 W08419 - N1012 W08413 - N1011 W08413 - N1011 W08419 - N1014 W08419
RMK: VA NOT DETECTED ON STLT DUE TO WX CLDS IN
SUMMMIT AREA. VONA INIDCATES VA EMS. MDL WINDS AT
FL FCST TO VEER NXT 18 HR EVENTUALLY BECMG MORE
FM THE E. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250505/0430Z
Volcanic Ash Advisory issued on 2025-05-04 at 16:49 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission obsd in webcam.
  • Volcanic ash emission obsd in webcam and repeted in vona. Volcanic ash emission not vsbl in satellite img due to meteorological little change in forecast exp through t+18 hours. Mvmt and height based on vona, webcam observation and nwp. Bertalan.

Original Message :

Received FVXX25 at 16:52 UTC, 04/05/25 from KNES
VA ADVISORY
DTG: 20250504/1649Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/097
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS OBSD IN WEBCAM
EST VA DTG: 04/1610Z
EST VA CLD: SFC/FL110 N1013 W08414 - N1012 W08414 - N1004 W08422 - N1010 W08425 - N1013 W08414 MOV SW 10KT
FCST VA CLD +6HR: 04/2200Z SFC/FL110 N1013 W08413 - N1012 W08413 - N1001 W08426 - N1010 W08431 - N1013 W08413
FCST VA CLD +12HR: 05/0400Z SFC/FL110 N1013 W08414 - N1012 W08413 - N0959 W08426 - N1008 W08430 - N1013 W08414
FCST VA CLD +18HR: 05/1000Z SFC/FL110 N1013 W08414 - N1012 W08413 - N1001 W08426 - N1009 W08431 - N1013 W08414
RMK: VA EMS OBSD IN WEBCAM AND RPTD IN VONA. VA
EMS NOT VSBL IN STLT IMG DUE TO MET CLDS. LTLCG
IN FCST EXP THRU T+18 HRS. MVMT AND HGT BASED ON
VONA, WEBCAM OBS AND NWP MDLS. ...BERTALAN
NXT ADVISORY: WILL BE ISSUED BY 20250504/2300Z
Volcanic Ash Advisory issued on 2025-05-04 at 11:06 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission on webcam.
  • Volcanic ash emission not obsd in satellite img due to meteorological clds, but some volcanic ash emission obsd in webcam. Little change in forecast exp through t+18 hours. Mvmt and height based on webcam observation and nwp. Bertalan.

Original Message :

Received FVXX25 at 11:08 UTC, 04/05/25 from KNES
VA ADVISORY
DTG: 20250504/1106Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/096
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS ON WEBCAM
EST VA DTG: 04/1040Z
EST VA CLD: SFC/FL100 N1013 W08414 - N1012 W08413 - N1004 W08420 - N1009 W08424 - N1013 W08414 MOV SW 5KT
FCST VA CLD +6HR: 04/1630Z SFC/FL100 N1013 W08413 - N1012 W08413 - N1000 W08423 - N1008 W08430 - N1013 W08413
FCST VA CLD +12HR: 04/2230Z SFC/FL100 N1013 W08414 - N1012 W08413 - N1001 W08425 - N1009 W08430 - N1013 W08414
FCST VA CLD +18HR: 05/0430Z SFC/FL100 N1013 W08414 - N1012 W08413 - N1000 W08423 - N1008 W08429 - N1013 W08414
RMK: VA EMS NOT OBSD IN STLT IMG DUE TO MET CLDS,
BUT SOME VA EMS OBSD IN WEBCAM. LTLCG IN FCST EXP
THRU T+18 HRS. MVMT AND HGT BASED ON WEBCAM OBS
AND NWP MDLS. ...BERTALAN
NXT ADVISORY: WILL BE ISSUED BY 20250504/1700Z
Volcanic Ash Advisory issued on 2025-05-04 at 05:14 UTC.

    Key information extracted from original VAA message :


  • Likely volcanic ash.
  • Volcanic ash not obsd by satellite due to weather cloud cover. Emission with incandescence obsd by webcam southwest. Uncertain of volcanic ash content in emission. Nwp models forecast volcanic ash to move w by t+12hrs. Hosley.

Original Message :

Received FVXX25 at 05:16 UTC, 04/05/25 from KNES
VA ADVISORY
DTG: 20250504/0514Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/095
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: LKLY VA CLDS.
OBS VA DTG: 04/0440Z
OBS VA CLD: SFC/FL100 N1012 W08414 - N1011 W08413 - N1008 W08417 - N1010 W08419 - N1012 W08414 MOV SW 10KT
FCST VA CLD +6HR: 04/1030Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1008 W08419 - N1012 W08419 - N1012 W08414
FCST VA CLD +12HR: 04/1630Z SFC/FL100 N1013 W08419 - N1012 W08414 - N1011 W08413 - N1010 W08419 - N1013 W08419
FCST VA CLD +18HR: 04/2230Z SFC/FL100 N1012 W08419 - N1012 W08413 - N1011 W08413 - N1008 W08419 - N1012 W08419
RMK: VA NOT OBSD BY STLT DUE TO WX CLD CVR. EMS
WITH INCANDESCENCE OBSD BY WEBCAM MOVIGN SW.
UNCERTAIN OF VA CONTENT IN EMS. NWP MDLS FCST VA
TO MOV W BY T+12HRS. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250504/1115Z
Volcanic Ash Advisory issued on 2025-05-03 at 23:08 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ongoing.
  • Volcanic ash not detected on satellite due to weather clouds in summit area. Webcam shows volcanic ash emission. Model winds at forecast to veer next 18 hour eventually becoming more from the e. Konon.

Original Message :

Received FVXX25 at 23:10 UTC, 03/05/25 from KNES
VA ADVISORY
DTG: 20250503/2308Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/094
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS ONGOING
EST VA DTG: 03/2250Z
EST VA CLD: SFC/FL100 N1011 W08413 - N1008 W08411 - N1008 W08416 - N1011 W08414 - N1011 W08413 MOV S 5KT
FCST VA CLD +6HR: 04/0500Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1008 W08413 - N1010 W08416 - N1012 W08413
FCST VA CLD +12HR: 04/1100Z SFC/FL100 N1011 W08414 - N1011 W08413 - N1008 W08416 - N1011 W08417 - N1011 W08414
FCST VA CLD +18HR: 04/1700Z SFC/FL100 N1013 W08417 - N1012 W08414 - N1011 W08413 - N1010 W08418 - N1013 W08417
RMK: VA NOT DETECTED ON STLT DUE TO WX CLDS IN
SUMMIT AREA. WEBCAM SHOWS VA EMS. MDL WINDS AT FL
FCST TO VEER NXT 18 HR EVENTUALLY BECMG MORE FM
THE E. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250504/0515Z
Volcanic Ash Advisory issued on 2025-05-03 at 17:11 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission reported.
  • Vona reported volcanic ash emission. Volcanic ash not obsd in satellite due to meteorological volcanic ash /dct based on report and model guidance. Nwp model forecast backing through t+18hrs. Zeng.

Original Message :

Received FVXX25 at 17:14 UTC, 03/05/25 from KNES
VA ADVISORY
DTG: 20250503/1711Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/093
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
OVSICORI-UNA.
ERUPTION DETAILS: VA EMS REPORTED
OBS VA DTG: 03/1650Z
OBS VA CLD: SFC/FL100 N1014 W08420 - N1012 W08413 - N1010 W08413 - N1010 W08420 - N1014 W08420 MOV W 5KT
FCST VA CLD +6HR: 03/2300Z SFC/FL100 N1012 W08413 - N1011 W08412 - N1004 W08417 - N1007 W08420 - N1012 W08413
FCST VA CLD +12HR: 04/0500Z SFC/FL100 N1013 W08413 - N1011 W08413 - N1004 W08418 - N1008 W08420 - N1013 W08413
FCST VA CLD +18HR: 04/1100Z SFC/FL100 N1012 W08413 - N1011 W08412 - N1004 W08421 - N1007 W08424 - N1012 W08413
RMK: VONA REPORTED VA EMS. VA NOT OBSD IN SAT DUE
TO MET CLDS. VA FL/DCT BASED ON RPRT AND MDL
GUIDANCE. NWP MDL FCST BACKING THRU T+18HRS.
...ZENG
NXT ADVISORY: WILL BE ISSUED BY 20250503/2315Z
Volcanic Ash Advisory issued on 2025-05-03 at 11:50 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission continuing.
  • Volcanic ash emission obsd in webcam. Volcanic ash not seen in satellite due to meteorological volcanic ash /dct based on prev advisory and model guidance. Nwp model forecast slightly veering through t+6hrs then backing through t+18hrs. Zeng.

Original Message :

Received FVXX25 at 11:53 UTC, 03/05/25 from KNES
VA ADVISORY
DTG: 20250503/1150Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/092
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS CONTG
OBS VA DTG: 03/1120Z
OBS VA CLD: SFC/FL100 N1014 W08424 - N1012 W08413 - N1011 W08413 - N1011 W08425 - N1014 W08424 MOV W 5KT
FCST VA CLD +6HR: 03/1730Z SFC/FL100 N1018 W08424 - N1013 W08413 - N1011 W08414 - N1013 W08426 - N1018 W08424
FCST VA CLD +12HR: 03/2330Z SFC/FL100 N1013 W08413 - N1011 W08413 - N1003 W08419 - N1006 W08422 - N1013 W08413
FCST VA CLD +18HR: 04/0530Z SFC/FL100 N1013 W08414 - N1012 W08412 - N1002 W08418 - N1005 W08423 - N1013 W08414
RMK: VA EMS OBSD IN WEBCAM. VA NOT SEEN IN SAT
DUE TO MET CLDS. VA FL/DCT BASED ON PREV ADVY AND
MDL GUIDANCE. NWP MDL FCST SLIGHTLY VEERING THRU
T+6HRS THEN BACKING THRU T+18HRS. ...ZENG
NXT ADVISORY: WILL BE ISSUED BY 20250503/1745Z
Volcanic Ash Advisory issued on 2025-05-03 at 05:58 UTC.

    Key information extracted from original VAA message :


  • Vona report of volcanic ash emission.
  • Vona report of volcanic ash move w-ly from summit. Volcanic ash not seen in satellite due to meteorological model guidance shows a more wnw move by t+12 hours. Move and height based on vona and model guidance. Kibler.

Original Message :

Received FVXX25 at 06:02 UTC, 03/05/25 from KNES
VA ADVISORY
DTG: 20250503/0558Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/091
INFO SOURCE: GOES-19. VONA. NWP MODELS.
ERUPTION DETAILS: VONA RPRT OF VA EMS
OBS VA DTG: 03/0540Z
OBS VA CLD: SFC/FL100 N1012 W08414 - N1011 W08414 - N1008 W08420 - N1012 W08421 - N1012 W08414 MOV W 5KT
FCST VA CLD +6HR: 03/1130Z SFC/FL100 N1013 W08424 - N1012 W08413 - N1011 W08414 - N1010 W08423 - N1013 W08424
FCST VA CLD +12HR: 03/1730Z SFC/FL100 N1016 W08422 - N1012 W08414 - N1011 W08414 - N1013 W08423 - N1016 W08422
FCST VA CLD +18HR: 03/2330Z SFC/FL100 N1018 W08422 - N1012 W08414 - N1011 W08414 - N1015 W08423 - N1018 W08422
RMK: VONA RPRT OF VA MOV W-LY FM SUMMIT. VA NOT SEEN
IN SAT DUE TO MET CLDS. MODEL GUIDANCE SHOWS A MORE
WNW MOV BY T+12 HRS. MOV AND HGT BASED ON VONA AND
MODEL GUIDANCE. ...KIBLER
NXT ADVISORY: WILL BE ISSUED BY 20250503/1200Z
Volcanic Ash Advisory issued on 2025-05-03 at 00:24 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ongoing.
  • Correction typo and vona information. Volcanic ash not detected on satellite due to weather clouds in summit area. Vona indicates volcanic ash emission continue. Model winds at forecast to veer next 12 hour eventually becoming more from the se. Konon.

Original Message :

Received FVXX25 at 00:26 UTC, 03/05/25 from KNES
VA ADVISORY -CORRECTION
DTG: 20250503/0024Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/090
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS ONGOING
EST VA DTG: 02/2350Z
EST VA CLD: SFC/FL100 N1012 W08414 - N1011 W08413 - N1007 W08417 - N1011 W08420 - N1012 W08414 MOV SW 5KT
FCST VA CLD +6HR: 03/0600Z SFC/FL100 N1013 W08420 - N1012 W08413 - N1011 W08413 - N1009 W08420 - N1013 W08420
FCST VA CLD +12HR: 03/1200Z SFC/FL100 N1016 W08417 - N1012 W08414 - N1011 W08414 - N1013 W08420 - N1016 W08417
FCST VA CLD +18HR: 03/1800Z SFC/FL100 N1017 W08417 - N1013 W08414 - N1011 W08414 - N1014 W08418 - N1017 W08417
RMK: COR TYPO AND VONA INFO. VA NOT DETECTED ON
STLT DUE TO WX CLDS IN SUMMIT AREA. VONA
INDICATES VA EMS CONTINUE. MDL WINDS AT FL FCST
TO VEER NXT 12 HR EVENTUALLY BECMG MORE FM THE
SE. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250503/0615Z
Volcanic Ash Advisory issued on 2025-05-02 at 18:22 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ongoing.
  • Thin volcanic ash plume detected on satellite moving w of summit. Webcam shows continuous volcanic ash emission. Model winds at forecast to back next 6 hour becoming more from the ene. Konon.

Original Message :

Received FVXX25 at 18:25 UTC, 02/05/25 from KNES
VA ADVISORY
DTG: 20250502/1822Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/089
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS ONGOING
OBS VA DTG: 02/1750Z
OBS VA CLD: SFC/FL100 N1014 W08425 - N1012 W08414 - N1011 W08414 - N1011 W08425 - N1014 W08425 MOV W 5KT
W 5KT
FCST VA CLD +6HR: 03/0000Z SFC/FL100 N1012 W08414 - N1011 W08414 - N1007 W08424 - N1011 W08425 - N1012 W08414
N1012 W08414
FCST VA CLD +12HR: 03/0600Z SFC/FL100 N1011 W08414 - N1011 W08414 - N1008 W08424 - N1010 W08425 - N1011 W08414
N1011 W08414
FCST VA CLD +18HR: 03/1200Z SFC/FL100 N1011 W08413 - N1011 W08413 - N1007 W08425 - N1011 W08425 - N1011 W08413
N1011 W08413
RMK: THIN VA PLUME DETECTED ON STLT MOVG W OF
SUMMIT. WEBCAM SHOWS CONS VA EMS. MDL WINDS AT FL
FCST TO BACK NXT 6 HR BECMG MORE FM THE ENE.
...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250503/0015Z
Volcanic Ash Advisory issued on 2025-05-02 at 12:30 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission continuing.
  • Correction for wind speed. Volcanic ash emission obsd in webcam but not in satellite due to meteorological volcanic ash /dct based on prev advisory and model guidance. Nwp model forecast sw-ly and wsw-ly winds through t+18hrs. Zeng.

Original Message :

Received FVXX25 at 12:34 UTC, 02/05/25 from KNES
VA ADVISORY -CORRECTION
DTG: 20250502/1230Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/088
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS CONTG
OBS VA DTG: 02/1150Z
OBS VA CLD: SFC/FL100 N1012 W08413 - N1011 W08413 - N1005 W08421 - N1008 W08423 - N1012 W08413 MOV SW 10KT
FCST VA CLD +6HR: 02/1800Z SFC/FL100 N1011 W08413 - N1010 W08413 - N1007 W08426 - N1011 W08426 - N1011 W08413
FCST VA CLD +12HR: 03/0000Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1004 W08419 - N1007 W08422 - N1012 W08414
FCST VA CLD +18HR: 03/0600Z SFC/FL100 N1011 W08413 - N1011 W08413 - N1005 W08422 - N1010 W08423 - N1011 W08413
RMK: CORRECTION FOR WIND SPEED. VA EMS OBSD IN
WEBCAM BUT NOT IN SAT DUE TO MET CLDS. VA FL/DCT
BASED ON PREV ADVY AND MDL GUIDANCE. NWP MDL FCST
SW-LY AND WSW-LY WINDS THRU T+18HRS. ...ZENG
NXT ADVISORY: WILL BE ISSUED BY 20250502/1830Z
Volcanic Ash Advisory issued on 2025-05-02 at 06:33 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash activity continuing.
  • Volcanic ash activity continuing based on volcano report. Volcanic ash not seen in satellite or webcam due to meteorological a continue sw-ly move through t+18 based on model guidance. Kibler.

Original Message :

Received FVXX25 at 06:35 UTC, 02/05/25 from KNES
VA ADVISORY
DTG: 20250502/0633Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/087
INFO SOURCE: GOES-19. NWP MODELS. OVSICORI-UNA.
ERUPTION DETAILS: VA ACT CONTG
EST VA DTG: 02/0610Z
EST VA CLD: SFC/FL100 N1012 W08413 - N1011 W08414 - N1008 W08417 - N1010 W08419 - N1012 W08413 MOV SW 10KT
FCST VA CLD +6HR: 02/1200Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1007 W08418 - N1009 W08420 - N1012 W08414
FCST VA CLD +12HR: 02/1800Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1009 W08420 - N1011 W08421 - N1012 W08413
FCST VA CLD +18HR: 03/0000Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1005 W08417 - N1008 W08419 - N1012 W08413
RMK: VA ACT CONTG BASED ON VO RPRT. VA NOT SEEN
IN SAT OR WEBCAM DUE TO MET CLDS. A CONT SW-LY
MOV THRU T+18 BASED ON MODEL GUIDANCE. ...KIBLER
NXT ADVISORY: WILL BE ISSUED BY 20250502/1230Z
Volcanic Ash Advisory issued on 2025-05-02 at 00:44 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission likely continuing.
  • Volcanic ash not obsd by webcam or satellite due to xtnsv weather cloud cover. Nwp models suggest volcanic ash moving southwest and forecast winds to slowly veer through t+18hrs to moving volcanic ash wsw. Hosley.

Original Message :

Received FVXX25 at 00:47 UTC, 02/05/25 from KNES
VA ADVISORY
DTG: 20250502/0044Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/086
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: VA EMS LKLY CONTG.
OBS VA DTG: 02/0010Z
OBS VA CLD: SFC/FL100 N1012 W08413 - N1011 W08413 - N1006 W08417 - N1009 W08419 - N1012 W08413 MOV SW 10KT
FCST VA CLD +6HR: 02/0600Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1006 W08417 - N1010 W08420 - N1012 W08413
FCST VA CLD +12HR: 02/1200Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1006 W08419 - N1010 W08422 - N1012 W08414
FCST VA CLD +18HR: 02/1800Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1007 W08420 - N1011 W08422 - N1012 W08413
RMK: VA NOT OBSD BY WEBCAM OR STLT DUE TO XTNSV
WX CLD CVR. NWP MDLS SUG VA MOVG SW AND FCST
WINDS TO SLOWLY VEER THRU T+18HRS TO MOVG VA WSW.
...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250502/0645Z
Volcanic Ash Advisory issued on 2025-05-01 at 18:39 UTC.

    Key information extracted from original VAA message :


  • Ongoing volcanic ash emission.
  • Intermittent volcanic ash emission observation in webcam along with emission of gas and steam. Volcanic ash not detected in satellite img. Model guidance suggests nw mvmt to shift southwest by t+6. Gatling.

Original Message :

Received FVXX25 at 18:41 UTC, 01/05/25 from KNES
VA ADVISORY
DTG: 20250501/1839Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/085
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: ONGOING VA EMS
EST VA DTG: 01/1810Z
EST VA CLD: SFC/FL100 N1018 W08419 - N1012 W08414 - N1011 W08414 - N1014 W08422 - N1018 W08419 MOV NW 5KT
FCST VA CLD +6HR: 02/0000Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1001 W08419 - N1005 W08423 - N1012 W08414
FCST VA CLD +12HR: 02/0600Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1001 W08419 - N1005 W08423 - N1012 W08414
FCST VA CLD +18HR: 02/1200Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1002 W08422 - N1008 W08425 - N1012 W08413
RMK: INTMT VA EMS OBS IN WEBCAM ALONG WITH EMS OF
GAS AND STEAM. VA NOT DETECTED IN STLT IMG. MDL
GUIDANCE SUGGESTS NW MVMT TO SHIFT SW BY T+6.
...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250502/0045Z
Volcanic Ash Advisory issued on 2025-05-01 at 12:39 UTC.

    Key information extracted from original VAA message :


  • Continuous volcanic ash emission.
  • Volcanic ash emission observation in webcam. Volcanic ash not visible in satellite img due to heavy meteorological cloud cover. Southwest mvmt to shift wnw by t+6. Forecast based on model. Gatling.

Original Message :

Received FVXX25 at 12:41 UTC, 01/05/25 from KNES
VA ADVISORY
DTG: 20250501/1239Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/084
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: CONS VA EMS
EST VA DTG: 01/1210Z
EST VA CLD: SFC/FL100 N1012 W08413 - N1011 W08413 - N1006 W08421 - N1010 W08423 - N1012 W08413 MOV SW 10KT
FCST VA CLD +6HR: 01/1800Z SFC/FL100 N1018 W08426 - N1012 W08414 - N1011 W08413 - N1012 W08428 - N1018 W08426
FCST VA CLD +12HR: 02/0000Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1002 W08425 - N1008 W08428 - N1012 W08414
FCST VA CLD +18HR: 02/0600Z SFC/FL100 N1012 W08414 - N1011 W08413 - N0958 W08420 - N1002 W08425 - N1012 W08414
RMK: VA EMS OBS IN WEBCAM. VA NOT VISIBLE IN STLT
IMG DUE TO HEAVY MET CLD CVR. SW MVMT TO SHIFT
WNW BY T+6. FCST BASED ON MDL WINDS. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250501/1845Z
Volcanic Ash Advisory issued on 2025-05-01 at 06:44 UTC.

    Key information extracted from original VAA message :


  • Possible ongoing volcanic ash emission.
  • Darkness and dense cloud cover over the volume has obscured possible volcanic ash emission. However, activity likely ongoing due to past recent volume activity. Emission presumed move to southwest of the summit. Lee.

Original Message :

Received FVXX25 at 06:47 UTC, 01/05/25 from KNES
VA ADVISORY
DTG: 20250501/0644Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/083
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: POSSIBLE ONGOING VA EMS.
OBS VA DTG: 01/0610Z
OBS VA CLD: SFC/FL100 N1012 W08414 - N1011 W08413 - N1008 W08418 - N1011 W08419 - N1012 W08414 MOV SW 10KT
FCST VA CLD +6HR: 01/1200Z SFC/FL100 N1013 W08414 - N1011 W08413 - N1008 W08416 - N1010 W08419 - N1013 W08414
FCST VA CLD +12HR: 01/1800Z NO VA EXP
FCST VA CLD +18HR: 02/0000Z NO VA EXP
RMK: DARKNESS AND DENSE CLD COVER OVER THE VOL
HAS OBSCURED POSSIBLE VA EMS. HOWEVER, ACT LIKELY
ONGOING DUE TO PAST RECENT VOL ACT. EMS PRESUMED
MOV TO SW OF THE SUMMIT. ...LEE
NXT ADVISORY: WILL BE ISSUED BY 20250501/1245Z
Volcanic Ash Advisory issued on 2025-05-01 at 01:05 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Volcanic ash emission not vsbl in satellite img due to meteorological clouds but volcanic ash emission may be obscured. Little change in forecast exp through t+12 hours. Mvmt and height based on nwp. Bertalan.

Original Message :

Received FVXX25 at 01:08 UTC, 01/05/25 from KNES
VA ADVISORY
DTG: 20250501/0105Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/082
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
EST VA DTG: 01/0040Z
EST VA CLD: SFC/FL100 N1014 W08414 - N1012 W08413 - N1002 W08422 - N1008 W08428 - N1014 W08414 MOV SW 10KT
SW 10KT
FCST VA CLD +6HR: 01/0630Z SFC/FL100 N1014 W08413 - N1011 W08413 - N0956 W08428 - N1005 W08436 - N1014 W08413
N1014 W08413
FCST VA CLD +12HR: 01/1230Z SFC/FL100 N1013 W08413 - N1011 W08412 - N0956 W08425 - N1005 W08435 - N1013 W08413
W08435 - N1013 W08413
FCST VA CLD +18HR: 01/1830Z NO VA EXP
RMK: VA EMS NOT VSBL IN STLT IMG DUE TO MET CLDS
BUT VA EMS MAY BE OBSCD. LTLCG IN FCST EXP THRU
T+12 HRS. MVMT AND HGT BASED ON NWP MDLS.
...BERTALAN
NXT ADVISORY: WILL BE ISSUED BY 20250501/0700Z
Volcanic Ash Advisory issued on 2025-04-30 at 19:18 UTC.

    Key information extracted from original VAA message :


  • Light volcanic ash emission.
  • Volcanic ash emission obsd in webcam. Volcanic ash emission not obsd in satellite img due to meteorological little change in forecast exp through t+18 hours. Mvmt and height based on webcam observation and nwp. Bertalan.

Original Message :

Received FVXX25 at 19:22 UTC, 30/04/25 from KNES
VA ADVISORY
DTG: 20250430/1918Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/081
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: LGT VA EMS
EST VA DTG: 30/1850Z
EST VA CLD: SFC/FL100 N1013 W08413 - N1011 W08413 - N1004 W08421 - N1011 W08424 - N1013 W08413 MOV SW 10KT
SW 10KT
FCST VA CLD +6HR: 01/0100Z SFC/FL100 N1013 W08413 - N1011 W08413 - N1002 W08426 - N1010 W08430 - N1013 W08413
N1013 W08413
FCST VA CLD +12HR: 01/0700Z SFC/FL100 N1013 W08414 - N1011 W08413 - N1000 W08424 - N1007 W08429 - N1013 W08414
W08429 - N1013 W08414
FCST VA CLD +18HR: 01/1300Z SFC/FL100 N1013 W08414 - N1012 W08413 - N1002 W08425 - N1010 W08429 - N1013 W08414
W08429 - N1013 W08414
RMK: VA EMS OBSD IN WEBCAM. VA EMS NOT OBSD IN
STLT IMG DUE TO MET CLDS. LTLCG IN FCST EXP THRU
T+18 HRS. MVMT AND HGT BASED ON WEBCAM OBS AND
NWP MDLS. ...BERTALAN
NXT ADVISORY: WILL BE ISSUED BY 20250501/0115Z
Volcanic Ash Advisory issued on 2025-04-30 at 13:33 UTC.

    Key information extracted from original VAA message :


  • Light volcanic ash emission.
  • Continuous volcanic ash emission observation in webcam. Volcanic ash not detected in satellite img. Southwest mvmt exp through t+18. Forecast based on model. Gatling.

Original Message :

Received FVXX25 at 13:35 UTC, 30/04/25 from KNES
VA ADVISORY
DTG: 20250430/1333Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/080
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: LGT VA EMS
EST VA DTG: 30/1300Z
EST VA CLD: SFC/FL100 N1012 W08414 - N1011 W08413 - N1004 W08419 - N1008 W08422 - N1012 W08414 MOV SW 10KT
FCST VA CLD +6HR: 30/1900Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1004 W08423 - N1009 W08426 - N1012 W08414
FCST VA CLD +12HR: 01/0100Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1004 W08423 - N1009 W08426 - N1012 W08413
FCST VA CLD +18HR: 01/0700Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1002 W08421 - N1006 W08425 - N1012 W08414
RMK: CONS VA EMS OBS IN WEBCAM. VA NOT DETECTED
IN STLT IMG. SW MVMT EXP THRU T+18. FCST BASED ON
MDL WINDS. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250430/1930Z
Volcanic Ash Advisory issued on 2025-04-29 at 23:29 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Volcanic ash emission not vsbl in satellite img due to meteorological volcanic ash emission may be obscured. Wnw mvmt exp to shift southwest by t+6 hours. Mvmt and height based on nwp. Bertalan.

Original Message :

Received FVXX25 at 23:33 UTC, 29/04/25 from KNES
VA ADVISORY
DTG: 20250429/2329Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/078
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
EST VA DTG: 29/2300Z
EST VA CLD: SFC/FL100 N1015 W08423 - N1012 W08413 - N1011 W08413 - N1010 W08423 - N1015 W08423 MOV NW 5KT
FCST VA CLD +6HR: 30/0500Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1000 W08421 - N1004 W08426 - N1012 W08414
FCST VA CLD +12HR: 30/1100Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1002 W08424 - N1008 W08428 - N1012 W08414
FCST VA CLD +18HR: 30/1700Z NO VA EXP
RMK: VA EMS NOT VSBL IN STLT IMG DUE TO MET
CLDS. VA EMS MAY BE OBSCD. WNW MVMT EXP TO
SHIFT SW BY T+6 HRS. MVMT AND HGT BASED ON NWP
MDLS. ...BERTALAN
NXT ADVISORY: WILL BE ISSUED BY 20250430/0530Z
Volcanic Ash Advisory issued on 2025-04-29 at 17:58 UTC.

    Key information extracted from original VAA message :


  • Continuous volcanic ash emission.
  • Volcanic ash emission obsd in webcam. Volcanic ash emission not vsbl in satellite due to meteorological clouds but volcanic ash emission likely obscured. Wnw mvmt exp to shift ssw by t+6 hours and exp to shift southwest by t+12 hours. Mvmt and height based on webcam and nwp. Bertalan.

Original Message :

Received FVXX25 at 18:02 UTC, 29/04/25 from KNES
VA ADVISORY
DTG: 20250429/1758Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/077
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: CONS VA EMS
EST VA DTG: 29/1730Z
EST VA CLD: SFC/FL100 N1016 W08424 - N1012 W08413 - N1011 W08413 - N1010 W08424 - N1016 W08424 MOV W 5KT
FCST VA CLD +6HR: 29/2330Z SFC/FL100 N1012 W08413 - N0958 W08415 - N1001 W08423 - N1012 W08414 - N1012 W08413
FCST VA CLD +12HR: 30/0530Z SFC/FL100 N1012 W08414 - N1012 W08413 - N0959 W08417 - N1003 W08426 - N1012 W08414
FCST VA CLD +18HR: 30/1130Z SFC/FL100 N1012 W08413 - N0959 W08418 - N1004 W08426 - N1011 W08414 - N1012 W08413
RMK: VA EMS OBSD IN WEBCAM. VA EMS NOT VSBL IN
STLT DUE TO MET CLDS BUT VA EMS LIKELY OBSCD. WNW
MVMT EXP TO SHIFT SSW BY T+6 HRS AND EXP TO SHIFT
SW BY T+12 HRS. MVMT AND HGT BASED ON WEBCAM AND NWP MDLS.
...BERTALAN
NXT ADVISORY: WILL BE ISSUED BY 20250430/0000Z
Volcanic Ash Advisory issued on 2025-04-29 at 12:17 UTC.

    Key information extracted from original VAA message :


  • Continuous volcanic ash emission.
  • Vona reports continuous volcanic ash emission to 300m above summit. Volcanic ash not obsd by satellite due to weather cloud cover. However volcanic ash.

Original Message :

Received FVXX25 at 12:20 UTC, 29/04/25 from KNES
VA ADVISORY
DTG: 20250429/1217Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/076
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: CONS VA EMS
OBS VA DTG: 29/1140Z
OBS VA CLD: SFC/FL100 N1012 W08414 - N1011 W08413 - N1009 W08420 - N1012 W08420 - N1012 W08414 MOV W 15KT
FCST VA CLD +6HR: 29/1730Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1006 W08420 - N1011 W08422 - N1012 W08413
FCST VA CLD +12HR: 29/2330Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1005 W08420 - N1011 W08423 - N1012 W08413
FCST VA CLD +18HR: 30/0530Z SFC/FL100 N1013 W08413 - N1012 W08413 - N1004 W08420 - N1010 W08424 - N1013 W08413
RMK: VONA RPRTS CONS VA EMS TO 300M ABV SUMMIT.
VA NOT OBSD BY STLT DUE TO WX CLD CVR. HWVR VA
OBSD IN WEBCAM WHEN CLR. OBS BASED ON WEBCAM AND
NWP MDLS WITH NWP MDLS FCSTG GENL WSW-SW MOVMT
THRU T+18HRS. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250429/1815Z
Volcanic Ash Advisory issued on 2025-04-28 at 23:41 UTC.

    Key information extracted from original VAA message :


  • Ongoing light volcanic ash emission.
  • Continuous light volcanic ash emission crntly observation in webcam. Satellite imagery obscured by weather volcanic ash forecast through t+18 hours based on nwp model guidance. Coverdale.

Original Message :

Received FVXX25 at 23:43 UTC, 28/04/25 from KNES
VA ADVISORY
DTG: 20250428/2341Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/074
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: ONGOING LGT VA EMS
OBS VA DTG: 28/2310Z
OBS VA CLD: SFC/FL100 N1012 W08414 - N1011 W08413 - N1007 W08419 - N1011 W08421 - N1012 W08414 MOV SW 10KT
FCST VA CLD +6HR: 29/0500Z SFC/FL100 N1013 W08422 - N1012 W08414 - N1011 W08413 - N1008 W08420 - N1013 W08422
FCST VA CLD +12HR: 29/1100Z SFC/FL100 N1013 W08422 - N1012 W08414 - N1011 W08414 - N1008 W08420 - N1013 W08422
FCST VA CLD +18HR: 29/1700Z SFC/FL100 N1015 W08420 - N1012 W08413 - N1011 W08413 - N1010 W08420 - N1015 W08420
RMK: CONS LGT VA EMS CRNTLY OBS IN WEBCAM. STLT
IMAGERY OBSCD BY WX CLDS. VA FCST THRU T+18 HRS
BASED ON NWP MDL GUIDANCE. ...COVERDALE
NXT ADVISORY: WILL BE ISSUED BY 20250429/0545Z
Volcanic Ash Advisory issued on 2025-04-28 at 18:04 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission likely.
  • Volcanic ash not crntly observation in satellite imagery or webcam but frqt volcanic ash observation in webcam during breaks in weather volcanic ash forecast through t+18 hours based on nwp. Coverdale.

Original Message :

Received FVXX25 at 18:07 UTC, 28/04/25 from KNES
VA ADVISORY
DTG: 20250428/1804Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/073
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS LIKELY
OBS VA DTG: 28/1730Z
OBS VA CLD: SFC/FL100 N1016 W08419 - N1012 W08413 - N1011 W08413 - N1011 W08419 - N1016 W08419 MOV W 5KT
FCST VA CLD +6HR: 28/2330Z SFC/FL100 N1013 W08413 - N1011 W08413 - N1004 W08419 - N1011 W08423 - N1013 W08413
FCST VA CLD +12HR: 29/0530Z SFC/FL100 N1014 W08423 - N1012 W08413 - N1011 W08413 - N1007 W08422 - N1014 W08423
FCST VA CLD +18HR: 29/1130Z SFC/FL100 N1015 W08425 - N1013 W08413 - N1012 W08413 - N1007 W08424 - N1015 W08425
RMK: VA NOT CRNTLY OBS IN STLT IMAGERY OR WEBCAM
BUT FRQT VA OBS IN WEBCAM DURING BRKS IN WX CLDS.
VA FCST THRU T+18 HRS BASED ON NWP MDLS.
...COVERDALE
NXT ADVISORY: WILL BE ISSUED BY 20250429/0000Z
Volcanic Ash Advisory issued on 2025-04-28 at 12:11 UTC.

    Key information extracted from original VAA message :


  • Continuous volcanic ash emission.
  • Vona reports emission to 300m above summit moving southwest. Based on curnt webcam and nwp models volcanic ash likely moving wsw. Volcanic ash not obsd by satellite due to weather cloud cover. Nwp models forecast continued wsw movement through t+18 aside from t+6 with wnw movement forecast. Hosley.

Original Message :

Received FVXX25 at 12:14 UTC, 28/04/25 from KNES
VA ADVISORY
DTG: 20250428/1211Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/072
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: CONS VA EMS.
OBS VA DTG: 28/1140Z
OBS VA CLD: SFC/FL100 N1012 W08413 - N1011 W08413 - N1010 W08417 - N1011 W08418 - N1012 W08413 MOV W 10KT
FCST VA CLD +6HR: 28/1730Z SFC/FL100 N1014 W08420 - N1012 W08413 - N1011 W08413 - N1011 W08420 - N1014 W08420
FCST VA CLD +12HR: 28/2330Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1008 W08419 - N1011 W08420 - N1012 W08413
FCST VA CLD +18HR: 29/0530Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1008 W08419 - N1012 W08420 - N1012 W08413
RMK: VONA RPRTS EMS TO 300M ABV SUMMIT MOVG SW.
BASED ON CURNT WEBCAM AND NWP MDLS VA LKLY MOVG
WSW. VA NOT OBSD BY STLT DUE TO WX CLD CVR. NWP
MDLS FCST CONTD WSW MOVMT THRU T+18 ASIDE FM T+6
WITH WNW MOVMT FCST. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250428/1815Z
Volcanic Ash Advisory issued on 2025-04-28 at 06:30 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission has disp.
  • Volcanic ash emission has disp in satellite imagery. No new emission.

Original Message :

Received FVXX25 at 06:32 UTC, 28/04/25 from KNES
VA ADVISORY
DTG: 20250428/0630Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/071
INFO SOURCE: GOES-18. WEBCAM. NWP MODELS. VOLCAT.
ERUPTION DETAILS: VA EMS HAS DISP
OBS VA DTG: 28/0600Z
OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA.
FCST VA CLD +6HR: 28/1200Z NO VA EXP
FCST VA CLD +12HR: 28/1800Z NO VA EXP
FCST VA CLD +18HR: 29/0000Z NO VA EXP
RMK: VA EMS HAS DISP IN STLT IMAGERY. NO NEW EMS
OBS. NO RPRTS OF NEW EMS. ...FISHER
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-04-28 at 00:40 UTC.

    Key information extracted from original VAA message :


  • Intermittent volcanic ash emission.
  • Volcanic ash emission observation in webcam and satellite img. Volcanic ash emission likely to continue. Model guidance suggests w mvmt from summit to shift southwest by t+6. Forecast confidence low. Gatling.

Original Message :

Received FVXX25 at 00:42 UTC, 28/04/25 from KNES
VA ADVISORY
DTG: 20250428/0040Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/070
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: INTMT VA EMS
EST VA DTG: 28/0000Z
EST VA CLD: SFC/FL100 N1014 W08422 - N1012 W08414 - N1011 W08414 - N1010 W08422 - N1014 W08422 MOV W 5KT
FCST VA CLD +6HR: 28/0600Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1001 W08417 - N1005 W08422 - N1012 W08414
FCST VA CLD +12HR: 28/1200Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1002 W08419 - N1005 W08423 - N1012 W08414
FCST VA CLD +18HR: 28/1800Z SFC/FL100 N1019 W08423 - N1012 W08414 - N1011 W08414 - N1013 W08425 - N1019 W08423
RMK: VA EMS OBS IN WEBCAM AND STLT IMG. VA EMS
LIKELY TO CONT. MDL GUIDANCE SUGGESTS W MVMT FM
SUMMIT TO SHIFT SW BY T+6. FCST CONFIDENCE LOW.
...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250428/0645Z
Volcanic Ash Advisory issued on 2025-04-27 at 18:43 UTC.

    Key information extracted from original VAA message :


  • Continuous volcanic ash emission.
  • Volcanic ash emission visible in webcam. Volcanic ash not visible in satellite img due to meteorological cloud cover. Nw mvmt to shift southwest by t+6. Forecast based on model. Gatling.

Original Message :

Received FVXX25 at 18:45 UTC, 27/04/25 from KNES
VA ADVISORY
DTG: 20250427/1843Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/069
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: CONS VA EMS
EST VA DTG: 27/1810Z
EST VA CLD: SFC/FL100 N1019 W08414 - N1011 W08413 - N1011 W08414 - N1018 W08419 - N1019 W08414 MOV NW 5KT
FCST VA CLD +6HR: 28/0000Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1003 W08419 - N1007 W08422 - N1012 W08414
FCST VA CLD +12HR: 28/0600Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1003 W08419 - N1007 W08423 - N1012 W08414
FCST VA CLD +18HR: 28/1200Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1002 W08419 - N1007 W08423 - N1012 W08414
RMK: VA EMS VISIBLE IN WEBCAM. VA NOT VISIBLE IN
STLT IMG DUE TO MET CLD CVR. NW MVMT TO SHIFT SW
BY T+6. FCST BASED ON MDL WINDS. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250428/0045Z
Volcanic Ash Advisory issued on 2025-04-27 at 12:51 UTC.

    Key information extracted from original VAA message :


  • Continue light volcanic ash em.
  • Em of volcanic ash with gas and steam seen on webcam. Volcanic ash obscured on satellite img by meteorological cloud cover. Exp wnw to nnw wind movnt through t+6 hours. Forecast bsd on nwp. Liner.

Original Message :

Received FVXX25 at 12:53 UTC, 27/04/25 from KNES
VA ADVISORY
DTG: 20250427/1251Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/068
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: CONT LGT VA EM
EST VA DTG: 27/1220Z
EST VA CLD: SFC/FL100 N1022 W08423 - N1012 W08413 - N1011 W08413 - N1014 W08428 - N1022 W08423 MOV NW 5KT
FCST VA CLD +6HR: 27/1830Z SFC/FL100 N1028 W08416 - N1012 W08413 - N1011 W08414 - N1023 W08426 - N1028 W08416
FCST VA CLD +12HR: 28/0030Z NO VA EXP
FCST VA CLD +18HR: 28/0630Z NO VA EXP
RMK: EM OF VA WITH GAS AND STEAM SEEN ON WEBCAM.
VA OBSCD ON STLT IMG BY MET CLD CVR. EXP WNW TO
NNW WND MOVNT THRU T+6 HRS. FCST BSD ON NWP MDLS.
...LINER
NXT ADVISORY: WILL BE ISSUED BY 20250427/1845Z
Volcanic Ash Advisory issued on 2025-04-27 at 07:02 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ongoing.
  • Volcanic ash not detected on satellite due to weather clouds in summit area. Minor volcanic ash emission likely continue recent activity. Model winds at forecast to veer next 6 hour becoming more from the ese. Konon.

Original Message :

Received FVXX25 at 07:05 UTC, 27/04/25 from KNES
VA ADVISORY
DTG: 20250427/0702Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/067
INFO SOURCE: GOES-19.
ERUPTION DETAILS: VA EMS ONGOING
EST VA DTG: 27/0620Z
EST VA CLD: SFC/FL100 N1014 W08419 - N1012 W08414 - N1011 W08414 - N1010 W08419 - N1014 W08419 MOV W 5KT
FCST VA CLD +6HR: 27/1230Z SFC/FL100 N1017 W08417 - N1011 W08414 - N1011 W08414 - N1014 W08420 - N1017 W08417
FCST VA CLD +12HR: 27/1830Z NO VA EXP
FCST VA CLD +18HR: 28/0030Z NO VA EXP
RMK: VA NOT DETECTED ON STLT DUE TO WX CLDS IN
SUMMIT AREA. MINOR VA EMS LIKELY CONTINUE GIVEN
RECENT ACTVTY. MDL WINDS AT FL FCST TO VEER NXT 6
HR BECMG MORE FM THE ESE. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250427/1300Z
Volcanic Ash Advisory issued on 2025-04-27 at 01:37 UTC.

    Key information extracted from original VAA message :


  • Rcnt volcanic ash observation.
  • Frqt volcanic ash emission observation in webcam during breaks in weather clouds the past few hours. Possible minor volcanic ash observation in satellite imagery apprx 10nm w from summit. Volcanic ash forecast through t+12 hours based on nwp. Coverdale.

Original Message :

Received FVXX25 at 01:40 UTC, 27/04/25 from KNES
VA ADVISORY
DTG: 20250427/0137Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/066
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: RCNT VA OBS
OBS VA DTG: 27/0110Z
OBS VA CLD: SFC/FL110 N1017 W08425 - N1013 W08413 - N1011 W08413 - N1008 W08425 - N1017 W08425 MOV W 5KT
FCST VA CLD +6HR: 27/0700Z SFC/FL110 N1023 W08425 - N1012 W08413 - N1011 W08413 - N1013 W08430 - N1023 W08425
FCST VA CLD +12HR: 27/1300Z SFC/FL110 N1022 W08414 - N1012 W08413 - N1011 W08414 - N1020 W08420 - N1022 W08414
FCST VA CLD +18HR: 27/1900Z NO VA EXP
RMK: FRQT VA EMS OBS IN WEBCAM DURING BRKS IN WX
CLDS THE PAST FEW HRS. PSBL MINOR VA OBS IN STLT
IMAGERY APPRX 10NM W FM SUMMIT. VA FCST THRU T+12
HRS BASED ON NWP MDLS. ...COVERDALE
NXT ADVISORY: WILL BE ISSUED BY 20250427/0730Z
Volcanic Ash Advisory issued on 2025-04-26 at 20:09 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Possible volcanic ash observation in webcam during breaks in weather clouds the past few hours. Volcanic ash not observation in satellite imagery. Volcanic ash forecast through t+6 hours based on nwp model guidance. Coverdale.

Original Message :

Received FVXX25 at 20:11 UTC, 26/04/25 from KNES
VA ADVISORY
DTG: 20250426/2009Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/065
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
OBS VA DTG: 26/1940Z
OBS VA CLD: SFC/FL120 N1017 W08409 - N1013 W08407 - N1011 W08414 - N1013 W08414 - N1017 W08409 MOV NE 5KT
FCST VA CLD +6HR: 27/0130Z SFC/FL120 N1022 W08412 - N1020 W08406 - N1011 W08413 - N1011 W08414 - N1022 W08412
FCST VA CLD +12HR: 27/0730Z NO VA EXP
FCST VA CLD +18HR: 27/1330Z NO VA EXP
RMK: PSBL VA OBS IN WEBCAM DURING BRKS IN WX CLDS
THE PAST FEW HRS. VA NOT OBS IN STLT IMAGERY. VA
FCST THRU T+6 HRS BASED ON NWP MDL GUIDANCE.
...COVERDALE
NXT ADVISORY: WILL BE ISSUED BY 20250427/0215Z
Volcanic Ash Advisory issued on 2025-04-26 at 14:09 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission observation.
  • Vona received. Volcanic ash emission observation in webcam but not detected in satellite img. North east mvmt exp through t+6. Forecast based on vona and model. Gatling.

Original Message :

Received FVXX25 at 14:11 UTC, 26/04/25 from KNES
VA ADVISORY
DTG: 20250426/1409Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/064
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS OBS
EST VA DTG: 26/1330Z
EST VA CLD: SFC/FL120 N1019 W08408 - N1015 W08405 - N1011 W08413 - N1012 W08414 - N1019 W08408 MOV NE 5KT
FCST VA CLD +6HR: 26/1930Z SFC/FL120 N1022 W08408 - N1019 W08405 - N1011 W08413 - N1011 W08414 - N1022 W08408
FCST VA CLD +12HR: 27/0130Z NO VA EXP
FCST VA CLD +18HR: 27/0730Z NO VA EXP
RMK: VONA RCVD. VA EMS OBS IN WEBCAM BUT NOT
DETECTED IN STLT IMG. NE MVMT EXP THRU T+6. FCST
BASED ON VONA AND MDL WINDS. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250426/2015Z
Volcanic Ash Advisory issued on 2025-04-26 at 04:40 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • Volcanic ash not detected on various satellite products. New volcanic ash emission possible any any. Konon.

Original Message :

Received FVXX25 at 04:46 UTC, 26/04/25 from KNES
VA ADVISORY
DTG: 20250426/0440Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/063
INFO SOURCE: GOES-19.
ERUPTION DETAILS: VA EMS ENDED
OBS VA DTG: 26/0420Z
OBS VA CLD: VA NOT IDENTIFIABLE FM STLT DATA
FCST VA CLD +6HR: 26/1030Z NO VA EXP
FCST VA CLD +12HR: 26/1630Z NO VA EXP
FCST VA CLD +18HR: 26/2230Z NO VA EXP
RMK: VA NOT DETECTED ON VARIOUS STLT PRODUCTS.
NEW VA EMS PSBL ANY ANY TTIME. ...KONON
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-04-25 at 22:58 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Webcam shows impressive steam and gas plume exiting caldera to the north east. Emission may light volcanic ash content. Volcanic ash not clrly detected by satellite. Estd from webcam. Nwp models forecast e to north east movement through t+18hrs. Hosley.

Original Message :

Received FVXX25 at 23:00 UTC, 25/04/25 from KNES
VA ADVISORY
DTG: 20250425/2258Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/062
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS.
OBS VA DTG: 25/2230Z
OBS VA CLD: SFC/FL120 N1019 W08408 - N1013 W08404 - N1011 W08413 - N1012 W08414 - N1019 W08408 MOV NE 10KT
FCST VA CLD +6HR: 26/0430Z SFC/FL120 N1020 W08405 - N1011 W08401 - N1011 W08414 - N1012 W08414 - N1020 W08405
FCST VA CLD +12HR: 26/1030Z SFC/FL120 N1021 W08405 - N1010 W08400 - N1011 W08413 - N1012 W08414 - N1021 W08405
FCST VA CLD +18HR: 26/1630Z SFC/FL120 N1026 W08401 - N1016 W08356 - N1011 W08414 - N1012 W08414 - N1026 W08401
RMK: WEBCAM SHOWS IMPRESSIVE STEAM AND GAS PLUME
EXITING CALDERA TO THE NE. EMS MAY CONTAIN LGT VA
CONTENT. VA NOT CLRLY DETECTED BY STLT. FL ESTD
FM WEBCAM. NWP MDLS FCST E TO NE MOVMT THRU
T+18HRS. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250426/0500Z
Volcanic Ash Advisory issued on 2025-04-25 at 16:58 UTC.

    Key information extracted from original VAA message :


  • Low level volcanic ash em.
  • Vona received of volcanic ash em. Volcanic ash seen in webcam at low elev. No volcanic ash seen in satellite img due to meteorological cloud cover. Exp north east movnt through t+12 hours. Wind movnt bsd on nwp bsd on vona and pst activity. Liner.

Original Message :

Received FVXX25 at 17:01 UTC, 25/04/25 from KNES
VA ADVISORY
DTG: 20250425/1658Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/061
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: LOW LVL VA EM
EST VA DTG: 25/1630Z
EST VA CLD: SFC/FL100 N1025 W08406 - N1016 W08358 - N1011 W08413 - N1012 W08414 - N1025 W08406 MOV NE 5KT
FCST VA CLD +6HR: 25/2230Z SFC/FL100 N1026 W08410 - N1021 W08359 - N1012 W08413 - N1012 W08414 - N1026 W08410
FCST VA CLD +12HR: 26/0430Z SFC/FL100 N1023 W08404 - N1012 W08359 - N1011 W08414 - N1012 W08413 - N1023 W08404
FCST VA CLD +18HR: 26/1030Z NO VA EXP
RMK: VONA RCVD OF VA EM. VA SEEN IN WEBCAM AT LOW
ELEV. NO VA SEEN IN STLT IMG DUE TO MET CLD CVR.
EXP NE MOVNT THRU T+12 HRS. WND MOVNT BSD ON NWP
MDLS. FL BSD ON VONA AND PST ACT. ...LINER
NXT ADVISORY: WILL BE ISSUED BY 20250425/2300Z
Volcanic Ash Advisory issued on 2025-04-25 at 03:59 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • Volcanic ash not detected on various satellite products. New volcanic ash emission possible at any. Konon.

Original Message :

Received FVXX25 at 04:02 UTC, 25/04/25 from KNES
VA ADVISORY
DTG: 20250425/0359Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/060
INFO SOURCE: GOES-19.
ERUPTION DETAILS: VA EMS ENDED
OBS VA DTG: 25/0330Z
OBS VA CLD: VA NOT IDENTIFIABLE FM STLT DATA
FCST VA CLD +6HR: 25/0930Z NO VA EXP
FCST VA CLD +12HR: 25/1530Z NO VA EXP
FCST VA CLD +18HR: 25/2130Z NO VA EXP
RMK: VA NOT DETECTED ON VARIOUS STLT PRODUCTS.
NEW VA EMS PSBL AT ANY TIME. ...KONON
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-04-24 at 22:30 UTC.

    Key information extracted from original VAA message :


  • Light volcanic ash emission.
  • Volcanic ash emission observation in satellite img move nne ext approximate 10nm from summit. Mvmt exp to shift ese by t+6. Forecast based on satellite and model. Gatling.

Original Message :

Received FVXX25 at 22:32 UTC, 24/04/25 from KNES
VA ADVISORY
DTG: 20250424/2230Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/059
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: LGT VA EMS
OBS VA DTG: 24/2150Z
OBS VA CLD: SFC/FL100 N1022 W08414 - N1019 W08407 - N1011 W08413 - N1011 W08414 - N1022 W08414 MOV NE 5KT
FCST VA CLD +6HR: 25/0400Z SFC/FL100 N1012 W08414 - N1010 W08359 - N1004 W08402 - N1011 W08414 - N1012 W08414
FCST VA CLD +12HR: 25/1000Z NO VA EXP
FCST VA CLD +18HR: 25/1600Z NO VA EXP
RMK: VA EMS OBS IN STLT IMG MOV NNE EXT APRX 10NM
FM SUMMIT. MVMT EXP TO SHIFT ESE BY T+6. FCST
BASED ON STLT AND MDL WINDS. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250425/0430Z
Volcanic Ash Advisory issued on 2025-04-24 at 07:28 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • Volcanic ash not detected on various satellite products. Weather clouds cover part of summit area. New volcanic ash emission possible at any. Konon.

Original Message :

Received FVXX25 at 07:30 UTC, 24/04/25 from KNES
VA ADVISORY
DTG: 20250424/0728Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/058
INFO SOURCE: GOES-19.
ERUPTION DETAILS: VA EMS ENDED
OBS VA DTG: 24/0710Z
OBS VA CLD: VA NOT IDENTIFIABLE FM STLT DATA
FCST VA CLD +6HR: 24/1300Z NO VA EXP
FCST VA CLD +12HR: 24/1900Z NO VA EXP
FCST VA CLD +18HR: 25/0100Z NO VA EXP
RMK: VA NOT DETECTED ON VARIOUS STLT PRODUCTS. WX
CLDS CVR PART OF SUMMIT AREA. NEW VA EMS PSBL AT
ANY TIME. ...KONON
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-04-24 at 01:38 UTC.

    Key information extracted from original VAA message :


  • Light volcanic ash emission.
  • Possible volcanic ash emission observation in satellite img move north east ext approximate 15nm from summit. Occasional volcanic ash emission may continue. Mvmt to shift se by t+6. Forecast confidence low. Gatling.

Original Message :

Received FVXX25 at 01:39 UTC, 24/04/25 from KNES
VA ADVISORY
DTG: 20250424/0138Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/057
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: LGT VA EMS
OBS VA DTG: 24/0100Z
OBS VA CLD: SFC/FL110 N1020 W08404 - N1017 W08401 - N1011 W08413 - N1012 W08414 - N1020 W08404 MOV NE 5KT
FCST VA CLD +6HR: 24/0700Z SFC/FL110 N1012 W08414 - N1004 W08401 - N0959 W08405 - N1011 W08414 - N1012 W08414
FCST VA CLD +12HR: 24/1300Z NO VA EXP
FCST VA CLD +18HR: 24/1900Z NO VA EXP
RMK: PSBL VA EMS OBS IN STLT IMG MOV NE EXT APRX
15NM FM SUMMIT. OCNL VA EMS MAY CONT. MVMT TO
SHIFT SE BY T+6. FCST CONFIDENCE LOW. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250424/0745Z
Volcanic Ash Advisory issued on 2025-04-23 at 19:43 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Volcanic ash not detected in satellite img maybe due to meteorological clouds obscure summit. Volcanic ash emission may continue. Model guidance suggests e mvmt to shift se by t+6. Gatling.

Original Message :

Received FVXX25 at 19:44 UTC, 23/04/25 from KNES
VA ADVISORY
DTG: 20250423/1943Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/056
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
EST VA DTG: 23/1900Z
EST VA CLD: SFC/FL120 N1016 W08404 - N1011 W08403 - N1011 W08413 - N1012 W08414 - N1016 W08404 MOV E 5KT
FCST VA CLD +6HR: 24/0100Z SFC/FL120 N1012 W08414 - N1009 W08358 - N1004 W08359 - N1011 W08414 - N1012 W08414
FCST VA CLD +12HR: 24/0700Z NO VA EXP
FCST VA CLD +18HR: 24/1300Z NO VA EXP
RMK: VA NOT DETECTED IN STLT IMG MAYBE DUE TO MET
CLDS OBSC SUMMIT. VA EMS MAY CONT. MDL GUIDANCE
SUGGESTS E MVMT TO SHIFT SE BY T+6. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250424/0145Z
Volcanic Ash Advisory issued on 2025-04-23 at 14:06 UTC.

    Key information extracted from original VAA message :


  • Vona repeted volcanic ash emission.
  • Vona received. Volcanic ash emission obsd in webcam. Hot spot activity vsbl in satellite img, but volcanic ash emission obscured due to meteorological little change in forecast exp through t+6 hours. Mvmt and height based on vona, webcam and nwp. Bertalan.

Original Message :

Received FVXX25 at 14:09 UTC, 23/04/25 from KNES
VA ADVISORY
DTG: 20250423/1406Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/055
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VONA RPTD VA EMS
EST VA DTG: 23/1340Z
EST VA CLD: SFC/FL120 N1019 W08404 - N1012 W08402 - N1011 W08413 - N1012 W08414 - N1019 W08404 MOV NE 5KT
FCST VA CLD +6HR: 23/1930Z SFC/FL120 N1023 W08357 - N1014 W08353 - N1011 W08413 - N1013 W08414 - N1023 W08357
FCST VA CLD +12HR: 24/0130Z NO VA EXP
FCST VA CLD +18HR: 24/0730Z NO VA EXP
RMK: VONA RCVD. VA EMS OBSD IN WEBCAM. HOT SPOT
ACT VSBL IN STLT IMG, BUT VA EMS OBSCD DUE TO MET
CLDS. LTLCG IN FCST EXP THRU T+6 HRS. MVMT AND
HGT BASED ON VONA, WEBCAM AND NWP MDLS.
...BERTALAN
NXT ADVISORY: WILL BE ISSUED BY 20250423/2000Z
Volcanic Ash Advisory issued on 2025-04-23 at 00:51 UTC.

    Key information extracted from original VAA message :


  • No volcanic ash emission.
  • Volcanic ash not detected in satellite img. No reports of volcanic ash emission received. Gatling.

Original Message :

Received FVXX25 at 00:53 UTC, 23/04/25 from KNES
VA ADVISORY
DTG: 20250423/0051Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/054
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: NO VA EMS
OBS VA DTG: 23/0020Z
OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA.
FCST VA CLD +6HR: 23/0630Z NO VA EXP
FCST VA CLD +12HR: 23/1230Z NO VA EXP
FCST VA CLD +18HR: 23/1830Z NO VA EXP
RMK: VA NOT DETECTED IN STLT IMG. NO RPRTS OF VA
EMS RCVD. ...GATLING
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-04-22 at 18:54 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Volcanic ash not detected in satellite img maybe due to meteorological cloud cover. Volcanic ash emission may continue. Nw mvmt from summit exp through t+6. Forecast based on model. Gatling.

Original Message :

Received FVXX25 at 18:56 UTC, 22/04/25 from KNES
VA ADVISORY
DTG: 20250422/1854Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/053
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
EST VA DTG: 22/1820Z
EST VA CLD: SFC/FL100 N1020 W08419 - N1011 W08413 - N1011 W08414 - N1015 W08423 - N1020 W08419 MOV NW 5KT
NW 5KT
FCST VA CLD +6HR: 23/0030Z SFC/FL100 N1026 W08419 - N1012 W08413 - N1011 W08414 - N1021 W08426 - N1026 W08419
N1026 W08419
FCST VA CLD +12HR: 23/0630Z NO VA EXP
FCST VA CLD +18HR: 23/1230Z NO VA EXP
RMK: VA NOT DETECTED IN STLT IMG MAYBE DUE TO MET
CLD CVR. VA EMS MAY CONT. NW MVMT FM SUMMIT EXP
THRU T+6. FCST BASED ON MDL WINDS. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250423/0100Z
Volcanic Ash Advisory issued on 2025-04-22 at 13:03 UTC.

    Key information extracted from original VAA message :


  • Vona report received.
  • Rcnt vona report received indicating volcanic ash emission mixing with steam/gas emission. Volcanic ash observation in webcam. Volcanic ash not crntly observation in satellite imagery. Volcanic ash based on vona. Volcanic ash forecast through t+6 hours based on nwp. Coverdale.

Original Message :

Received FVXX25 at 13:06 UTC, 22/04/25 from KNES
VA ADVISORY
DTG: 20250422/1303Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/052
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VONA RPRT RCVD
OBS VA DTG: 22/1230Z
OBS VA CLD: SFC/FL100 N1013 W08413 - N1012 W08413 - N1008 W08415 - N1011 W08419 - N1013 W08413 MOV SW 10KT
FCST VA CLD +6HR: 22/1830Z SFC/FL100 N1017 W08424 - N1012 W08413 - N1011 W08413 - N1006 W08423 - N1017 W08424
FCST VA CLD +12HR: 23/0030Z NO VA EXP
FCST VA CLD +18HR: 23/0630Z NO VA EXP
RMK: RCNT VONA RPRT RCVD INDICATING VA EMS MIXING
WITH STEAM/GAS EMS. VA OBS IN WEBCAM. VA NOT
CRNTLY OBS IN STLT IMAGERY. VA FL BASED ON VONA.
VA FCST THRU T+6 HRS BASED ON NWP MDLS.
...COVERDALE
NXT ADVISORY: WILL BE ISSUED BY 20250422/1900Z
Volcanic Ash Advisory issued on 2025-04-22 at 06:35 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • Volcanic ash not detected on various satellite products. Weather clouds cover part of summit area. New volcanic ash emission possible at any. Konon.

Original Message :

Received FVXX25 at 06:38 UTC, 22/04/25 from KNES
VA ADVISORY
DTG: 20250422/0635Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/051
INFO SOURCE: GOES-19.
ERUPTION DETAILS: VA EMS ENDED
OBS VA DTG: 22/0610Z
OBS VA CLD: VA NOT IDENTIFIABLE FM STLT DATA
FCST VA CLD +6HR: 22/1200Z NO VA EXP
FCST VA CLD +12HR: 22/1800Z NO VA EXP
FCST VA CLD +18HR: 23/0000Z NO VA EXP
RMK: VA NOT DETECTED ON VARIOUS STLT PRODUCTS. WX
CLDS CVR PART OF SUMMIT AREA. NEW VA EMS PSBL AT
ANY TIME. ...KONON
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-04-22 at 01:10 UTC.

    Key information extracted from original VAA message :


  • Continuous volcanic ash emission.
  • Volcanic ash emission have slowed but ongoing now move southwest ext approximate 15nm from summit. Mvmt exp to shift toward wsw by t+18. Forecast based on satellite img and model. Gatling.

Original Message :

Received FVXX25 at 01:12 UTC, 22/04/25 from KNES
VA ADVISORY
DTG: 20250422/0110Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/050
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: CONS VA EMS
OBS VA DTG: 22/0040Z
OBS VA CLD: SFC/FL140 N1012 W08414 - N1011 W08413 - N0957 W08419 - N1002 W08427 - N1012 W08414 MOV SW 5KT
FCST VA CLD +6HR: 22/0630Z SFC/FL140 N1012 W08414 - N1011 W08413 - N0954 W08420 - N0959 W08429 - N1012 W08414
FCST VA CLD +12HR: 22/1230Z SFC/FL140 N1012 W08414 - N1011 W08413 - N0954 W08420 - N0959 W08429 - N1012 W08414
FCST VA CLD +18HR: 22/1830Z SFC/FL140 N1012 W08414 - N1011 W08413 - N1002 W08431 - N1011 W08434 - N1012 W08414
RMK: VA EMS HAVE SLOWED BUT ONGOING NOW MOV SW
EXT APRX 15NM FM SUMMIT. MVMT EXP TO SHIFT TWD
WSW BY T+18. FCST BASED ON STLT IMG AND MDL
WINDS. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250422/0715Z
Volcanic Ash Advisory issued on 2025-04-21 at 21:02 UTC.

    Key information extracted from original VAA message :


  • Continuous volcanic ash emission.
  • Vona received fr volcanic ash emission move southwest. Volcanic ash emission visible in webcam. Ongoing volcanic ash emission likely to continue. Mvmt exp to shift south by t+6. Gatling.

Original Message :

Received FVXX25 at 21:05 UTC, 21/04/25 from KNES
VA ADVISORY
DTG: 20250421/2102Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/049
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: CONS VA EMS
EST VA DTG: 21/2030Z
EST VA CLD: SFC/FL140 N1012 W08425 - N1012 W08414 - N1011 W08413 - N1007 W08423 - N1012 W08425 MOV W 5KT
FCST VA CLD +6HR: 22/0230Z SFC/FL140 N1012 W08414 - N1011 W08413 - N0958 W08411 - N0958 W08418 - N1012 W08414
FCST VA CLD +12HR: 22/0830Z NO VA EXP
FCST VA CLD +18HR: 22/1430Z NO VA EXP
RMK: VONA RCVD FR VA EMS MOV SW. VA EMS VISIBLE
IN WEBCAM. ONGOING VA EMS LIKELY TO CONT. MVMT
EXP TO SHIFT S BY T+6. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250422/0300Z
Volcanic Ash Advisory issued on 2025-04-21 at 04:21 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • Volcanic ash not detected mon various satellite products. Weather clouds cover much of summit area currently. New volcanic ash emission possible at any. Konon.

Original Message :

Received FVXX25 at 04:30 UTC, 21/04/25 from KNES
VA ADVISORY
DTG: 20250421/0421Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/048
INFO SOURCE: GOES-19.
ERUPTION DETAILS: VA EMS ENDED
OBS VA DTG: 21/0350Z
OBS VA CLD: VA NOT IDENTIFIABLE FM STLT DATA
FCST VA CLD +6HR: 21/1000Z NO VA EXP
FCST VA CLD +12HR: 21/1600Z NO VA EXP
FCST VA CLD +18HR: 21/2200Z NO VA EXP
RMK: VA NOT DETECTED MON VARIOUS STLT PRODUCTS.
WX CLDS CVR MUCH OF SUMMIT AREA CURRENTLY. NEW VA
EMS PSBL AT ANY TIME. ...KONON
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-04-20 at 22:29 UTC.

    Key information extracted from original VAA message :


  • Continue volcanic ash emission observation in webcam.
  • Continue volcanic ash emission observation in webcam. Volcanic ash not observation in satellite imagery. Volcanic ash forecast to move w of summit through t+12hrs before disp. Volcano activity low. Fisher.

Original Message :

Received FVXX25 at 22:31 UTC, 20/04/25 from KNES
VA ADVISORY
DTG: 20250420/2229Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/047
INFO SOURCE: GOES-18. WEBCAM. NWP MODELS. VOLCAT.
ERUPTION DETAILS: CONT VA EMS OBS IN WEBCAM
OBS VA DTG: 20/2200Z
OBS VA CLD: SFC/FL100 N1013 W08417 - N1012 W08413 - N1011 W08416 - N1013 W08417 MOV W 15KT
FCST VA CLD +6HR: 21/0400Z SFC/FL100 N1013 W08417 - N1012 W08413 - N1011 W08416 - N1013 W08417
FCST VA CLD +12HR: 21/1000Z SFC/FL100 N1013 W08417 - N1012 W08413 - N1011 W08416 - N1013 W08417
FCST VA CLD +18HR: 21/1600Z NO VA EXP
RMK: CONT VA EMS OBS IN WEBCAM. VA NOT OBS IN
STLT IMAGERY. VA FCST TO MOV W OF SUMMIT THRU
T+12HRS BEFORE DISP. VO ACT LOW. ...FISHER
NXT ADVISORY: WILL BE ISSUED BY 20250421/0430Z
Volcanic Ash Advisory issued on 2025-04-20 at 16:41 UTC.

    Key information extracted from original VAA message :


  • Continuous volcanic ash emission.
  • Vona reports volcanic ash obsd when webcam not obscured by weather cloud cover. Curntly clear webcam shows continuous volcanic ash emission.

Original Message :

Received FVXX25 at 16:44 UTC, 20/04/25 from KNES
VA ADVISORY
DTG: 20250420/1641Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/046
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: CONS VA EMS.
OBS VA DTG: 20/1620Z
OBS VA CLD: SFC/FL100 N1012 W08413 - N1011 W08413 - N1008 W08420 - N1011 W08420 - N1012 W08413 MOV W 10KT
W 10KT
FCST VA CLD +6HR: 20/2230Z SFC/FL100 N1013 W08421 - N1012 W08414 - N1011 W08413 - N1008 W08421 - N1013 W08421
N1013 W08421
FCST VA CLD +12HR: 21/0430Z SFC/FL100 N1013 W08422 - N1012 W08414 - N1011 W08413 - N1009 W08422 - N1013 W08422
W08422 - N1013 W08422
FCST VA CLD +18HR: 21/1030Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1006 W08420 - N1011 W08422 - N1012 W08413
W08422 - N1012 W08413
RMK: VONA RPRTS VA OBSD WHEN WEBCAM NOT OBSCD BY
WX CLD CVR. CURNTLY CLR WEBCAM SHOWS CONS VA EMS.
OBS ESTD FM WEBCAM AS VA NOT OBSD BY STLT. NWP
MDLS FCST W TO WSW MOVMT THRU T+18HRS. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250420/2245Z
Volcanic Ash Advisory issued on 2025-04-19 at 20:51 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission has disp.
  • Volcanic ash emission has disp in satellite imagery. No new emission.

Original Message :

Received FVXX25 at 20:56 UTC, 19/04/25 from KNES
VA ADVISORY
DTG: 20250419/2051Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/045
INFO SOURCE: GOES-18. WEBCAM. NWP MODELS. VOLCAT.
ERUPTION DETAILS: VA EMS HAS DISP
OBS VA DTG: 19/2020Z
OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA.
FCST VA CLD +6HR: 20/0230Z NO VA EXP
FCST VA CLD +12HR: 20/0830Z NO VA EXP
FCST VA CLD +18HR: 20/1430Z NO VA EXP
RMK: VA EMS HAS DISP IN STLT IMAGERY. NO NEW EMS
OBS. NO RPRTS OF VA EMS. ...FISHER
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-04-19 at 14:56 UTC.

    Key information extracted from original VAA message :


  • Vona repeted volcanic ash emission.
  • Vona received. Volcanic ash emission obsd in webcam but not on satellite img due to meteorological w mvmt exp to shift southwest by t+6 hours. Mvmt and height based on vona, webcam, and nwp. Bertalan.

Original Message :

Received FVXX25 at 14:59 UTC, 19/04/25 from KNES
VA ADVISORY
DTG: 20250419/1456Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/044
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VONA RPTD VA EMS
EST VA DTG: 19/1430Z
EST VA CLD: SFC/FL100 N1014 W08422 - N1012 W08413 - N1011 W08413 - N1010 W08422 - N1014 W08422 MOV W 5KT
FCST VA CLD +6HR: 19/2030Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1004 W08422 - N1008 W08425 - N1012 W08414
FCST VA CLD +12HR: 20/0230Z NO VA EXP
FCST VA CLD +18HR: 20/0830Z NO VA EXP
RMK: VONA RCVD. VA EMS OBSD IN WEBCAM BUT NOT ON
STLT IMG DUE TO MET CLDS. W MVMT EXP TO SHIFT SW
BY T+6 HRS. MVMT AND HGT BASED ON VONA, WEBCAM,
AND NWP MDLS. ...BERTALAN
NXT ADVISORY: WILL BE ISSUED BY 20250419/2100Z
Volcanic Ash Advisory issued on 2025-04-19 at 11:08 UTC.

    Key information extracted from original VAA message :


  • No volcanic ash emission obsd.
  • No volcanic ash emission vsbl in satellite img. No rcnt repeats of volcanic ash emission received. Bertalan.

Original Message :

Received FVXX25 at 11:12 UTC, 19/04/25 from KNES
VA ADVISORY
DTG: 20250419/1108Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/043
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: NO VA EMS OBSD
EST VA DTG: 19/1040Z
EST VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA.
FCST VA CLD +6HR: 19/1630Z NO VA EXP
FCST VA CLD +12HR: 19/2230Z NO VA EXP
FCST VA CLD +18HR: 20/0430Z NO VA EXP
RMK: NO VA EMS VSBL IN STLT IMG. NO RCNT RPTS OF
VA EMS RCVD. ...BERTALAN
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-04-19 at 05:23 UTC.

    Key information extracted from original VAA message :


  • Possible light volcanic ash em.
  • Volcanic ash not detected from satellite under mostly clear conditions. Webcam showed incandescence and possible volcanic ash em. Observation volcanic ash based on prev t+6 forecast. Turk.

Original Message :

Received FVXX25 at 05:25 UTC, 19/04/25 from KNES
VA ADVISORY
DTG: 20250419/0523Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/042
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: PSBL LGT VA EM
EST VA DTG: 19/0450Z
EST VA CLD: SFC/FL100 N1014 W08413 - N1009 W08413 - N1007 W08427 - N1013 W08427 - N1014 W08413 MOV W 10KT
FCST VA CLD +6HR: 19/1100Z NO VA EXP
FCST VA CLD +12HR: 19/1700Z NO VA EXP
FCST VA CLD +18HR: 19/2300Z NO VA EXP
RMK: VA NOT DETECTED FM STLT UNDER MSTLY CLR
CONDITIONS. WEBCAM SHOWED INCANDESCENCE AND PSBL
VA EM. OBS VA BASED ON PREV T+6 FCST. ...TURK
NXT ADVISORY: WILL BE ISSUED BY 20250419/1130Z
Volcanic Ash Advisory issued on 2025-04-18 at 23:28 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Steam and gas emission obsd by webcam with possible light intermittent volcanic ash emission. Volcanic ash emission not obsd by satellite. Nwp models forecast little change in winds through. Hosley.

Original Message :

Received FVXX25 at 23:30 UTC, 18/04/25 from KNES
VA ADVISORY
DTG: 20250418/2328Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/041
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS.
OBS VA DTG: 18/2250Z
OBS VA CLD: SFC/FL100 N1013 W08422 - N1013 W08414 - N1011 W08413 - N1009 W08422 - N1013 W08422 MOV W 15KT
FCST VA CLD +6HR: 19/0500Z SFC/FL100 N1014 W08423 - N1013 W08414 - N1011 W08413 - N1008 W08423 - N1014 W08423
FCST VA CLD +12HR: 19/1100Z NO VA EXP
FCST VA CLD +18HR: 19/1700Z NO VA EXP
RMK: STEAM AND GAS EMS OBSD BY WEBCAM WITH PSBL
LGT INTMT VA EMS. VA EMS NOT OBSD BY STLT. NWP
MDLS FCST LTLCG IN WINDS THRU T+6HRS. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250419/0530Z
Volcanic Ash Advisory issued on 2025-04-18 at 17:29 UTC.

    Key information extracted from original VAA message :


  • Intermittent volcanic ash emission.
  • Volcanic ash clouds obsd intermittently among occasional steam and gas emission on webcam. Volcanic ash not obsd by satellite partly due to weather cloud cover over summit. Nwp models forecast genl w-wsw movement through t+12hrs. Hosley.

Original Message :

Received FVXX25 at 17:31 UTC, 18/04/25 from KNES
VA ADVISORY
DTG: 20250418/1729Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/040
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: INTMT VA EMS.
OBS VA DTG: 18/1700Z
OBS VA CLD: SFC/FL100 N1012 W08413 - N1011 W08413 - N1010 W08419 - N1012 W08419 - N1012 W08413 MOV W 10KT
FCST VA CLD +6HR: 18/2300Z SFC/FL100 N1013 W08413 - N1011 W08413 - N1007 W08422 - N1011 W08423 - N1013 W08413
FCST VA CLD +12HR: 19/0500Z SFC/FL100 N1014 W08423 - N1012 W08413 - N1011 W08413 - N1009 W08423 - N1014 W08423
FCST VA CLD +18HR: 19/1100Z NO VA EXP
RMK: VA CLDS OBSD INTMTLY AMONG OCNL STEAM AND
GAS EMS ON WEBCAM. VA NOT OBSD BY STLT PTLY DUE
TO WX CLD CVR OVR SUMMIT. NWP MDLS FCST GENL
W-WSW MOVMT THRU T+12HRS. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250418/2330Z
Volcanic Ash Advisory issued on 2025-04-18 at 11:24 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Volcanic ash emission not vsbl in satellite img due to meteorological clouds but volcanic ash emission may be obscured. Little change in forecast exp through t+12 hours. Mvmt and height based on nwp. Bertalan.

Original Message :

Received FVXX25 at 11:26 UTC, 18/04/25 from KNES
VA ADVISORY
DTG: 20250418/1124Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/039
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
EST VA DTG: 18/1050Z
EST VA CLD: SFC/FL100 N1015 W08426 - N1013 W08413 - N1012 W08414 - N1009 W08426 - N1015 W08426 MOV W 20KT
FCST VA CLD +6HR: 18/1700Z SFC/FL100 N1016 W08432 - N1013 W08414 - N1012 W08413 - N1007 W08432 - N1016 W08432
FCST VA CLD +12HR: 18/2300Z SFC/FL100 N1017 W08432 - N1013 W08413 - N1012 W08413 - N1008 W08432 - N1017 W08432
FCST VA CLD +18HR: 19/0500Z NO VA EXP
RMK: VA EMS NOT VSBL IN STLT IMG DUE TO MET CLDS
BUT VA EMS MAY BE OBSCD. LTLCG IN FCST EXP THRU
T+12 HRS. MVMT AND HGT BASED ON NWP MDLS.
...BERTALAN
NXT ADVISORY: WILL BE ISSUED BY 20250418/1730Z
Volcanic Ash Advisory issued on 2025-04-18 at 05:29 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission likely.
  • Ongoing steam/gas emission with some volcanic ash likely mixed in seen in webcam. Satellite imagery obscured by weather volcanic ash forecast through t+18 hours based on nwp. Coverdale.

Original Message :

Received FVXX25 at 05:31 UTC, 18/04/25 from KNES
VA ADVISORY
DTG: 20250418/0529Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/038
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS LIKELY
OBS VA DTG: 18/0450Z
OBS VA CLD: SFC/FL100 N1013 W08413 - N1011 W08413 - N1007 W08418 - N1013 W08421 - N1013 W08413 MOV W 20KT
FCST VA CLD +6HR: 18/1100Z SFC/FL100 N1013 W08413 - N1011 W08413 - N1005 W08423 - N1011 W08426 - N1013 W08413
FCST VA CLD +12HR: 18/1700Z SFC/FL100 N1013 W08423 - N1012 W08413 - N1011 W08413 - N1007 W08422 - N1013 W08423
FCST VA CLD +18HR: 18/2300Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1005 W08420 - N1011 W08423 - N1012 W08413
RMK: ONGOING STEAM/GAS EMS WITH SOME VA LIKELY
MIXED IN SEEN IN WEBCAM. STLT IMAGERY OBSCD BY WX
CLDS. VA FCST THRU T+18 HRS BASED ON NWP MDLS.
...COVERDALE
NXT ADVISORY: WILL BE ISSUED BY 20250418/1130Z
Volcanic Ash Advisory issued on 2025-04-17 at 23:36 UTC.

    Key information extracted from original VAA message :


  • Continuing occasional to frqt volcanic ash emission.
  • Multiple volcanic ash clouds obsd by webcam moving w through 23:31 UTC before weather cloud cover moved in and obscured crater. Volcanic ash not obsd by satellite due to weather cloud cover. Observation based on webcam emission and nwp nwp models forecast volcanic ash to move wsw by. Hosley.

Original Message :

Received FVXX25 at 23:39 UTC, 17/04/25 from KNES
VA ADVISORY
DTG: 20250417/2336Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/037
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: CONTG OCNL TO FRQT VA EMS.
OBS VA DTG: 17/2250Z
OBS VA CLD: SFC/FL100 N1013 W08417 - N1012 W08413 - N1011 W08413 - N1010 W08417 - N1013 W08417 MOV W 10KT
FCST VA CLD +6HR: 18/0500Z SFC/FL100 N1012 W08418 - N1012 W08413 - N1011 W08413 - N1009 W08417 - N1012 W08418
FCST VA CLD +12HR: 18/1100Z SFC/FL100 N1012 W08418 - N1012 W08413 - N1011 W08413 - N1009 W08417 - N1012 W08418
FCST VA CLD +18HR: 18/1700Z SFC/FL100 N1013 W08419 - N1012 W08413 - N1011 W08413 - N1010 W08418 - N1013 W08419
RMK: MULT VA CLDS OBSD BY WEBCAM MOVG W THRU
2315Z BFR WX CLD CVR MOVD IN AND OBSCD CRATER. VA
NOT OBSD BY STLT DUE TO WX CLD CVR. OBS BASED ON
WEBCAM EMS AND NWP MDLS. NWP MDLS FCST VA TO MOV
WSW BY T+6HRS. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250418/0530Z
Volcanic Ash Advisory issued on 2025-04-17 at 18:21 UTC.

    Key information extracted from original VAA message :


  • Occasional volcanic ash em.
  • Vona received of volcanic ash em. Volcanic ash seen in webcam but not seen in satellite img due to meteorological cloud cover. General southwest movnt exp through t+12 hours. Wind movnt bsd on nwp bsd on vona. Liner.

Original Message :

Received FVXX25 at 18:24 UTC, 17/04/25 from KNES
VA ADVISORY
DTG: 20250417/1821Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/036
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: OCNL VA EM
EST VA DTG: 17/1740Z
EST VA CLD: SFC/FL100 N1012 W08413 - N1011 W08413 - N0954 W08429 - N1011 W08438 - N1012 W08413 MOV SW 20KT
SW 20KT
FCST VA CLD +6HR: 17/2330Z SFC/FL100 N1012 W08414 - N1010 W08413 - N0950 W08430 - N1006 W08438 - N1012 W08414
N1012 W08414
FCST VA CLD +12HR: 18/0530Z SFC/FL100 N1017 W08441 - N1012 W08413 - N1011 W08413 - N0958 W08435 - N1017 W08441
W08435 - N1017 W08441
FCST VA CLD +18HR: 18/1130Z NO VA EXP
RMK: VONA RCVD OF VA EM. VA SEEN IN WEBCAM
BUT NOT SEEN IN STLT IMG DUE TO MET CLD CVR. GEN SW
MOVNT EXP THRU T+12 HRS. WND MOVNT BSD ON NWP
MDLS. FL BSD ON VONA. ...LINER
NXT ADVISORY: WILL BE ISSUED BY 20250418/0015Z
Volcanic Ash Advisory issued on 2025-04-17 at 12:35 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash em dtctd.
  • Vona received of volcanic ash em. Occasional volcanic ash seen on webcam. Exp wsw wind movnt through t+6 hours. Wind movnt bsd on nwp bsd on vona. Liner.

Original Message :

Received FVXX25 at 12:38 UTC, 17/04/25 from KNES
VA ADVISORY
DTG: 20250417/1235Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/035
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EM DTCTD
EST VA DTG: 17/1210Z
EST VA CLD: SFC/FL100 N1014 W08435 - N1011 W08413 - N1011 W08413 - N0959 W08430 - N1014 W08435 MOV SW 15KT
FCST VA CLD +6HR: 17/1800Z SFC/FL100 N1014 W08441 - N1011 W08414 - N1011 W08413 - N0956 W08434 - N1014 W08441
FCST VA CLD +12HR: 18/0000Z NO VA EXP
FCST VA CLD +18HR: 18/0600Z NO VA EXP
RMK: VONA RCVD OF VA EM. OCNL VA SEEN ON WEBCAM.
EXP WSW WND MOVNT THRU T+6 HRS. WND MOVNT BSD ON
NWP MDLS. FL BSD ON VONA. ...LINER
NXT ADVISORY: WILL BE ISSUED BY 20250417/1830Z
Volcanic Ash Advisory issued on 2025-04-12 at 19:22 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • Volcanic ash not detected on various satellite products. New volcanic ash emission possible at any. Konon.

Original Message :

Received FVXX23 at 19:24 UTC, 12/04/25 from KNES
VA ADVISORY
DTG: 20250412/1922Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/034
INFO SOURCE: GOES-19.
ERUPTION DETAILS: VA EMS ENDED
OBS VA DTG: 12/1900Z
OBS VA CLD: VA NOT IDENTIFIABLE FM STLT DATA
FCST VA CLD +6HR: 13/0100Z NO VA EXP
FCST VA CLD +12HR: 13/0700Z NO VA EXP
FCST VA CLD +18HR: 13/1300Z NO VA EXP
RMK: VA NOT DETECTED ON VARIOUS STLT PRODUCTS.
NEW VA EMS PSBL AT ANY TIME. ...KONON
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-04-12 at 13:53 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Vona reports possible volcanic ash emission and degassing from summit. No volcanic ash obsd by webcam due to weather cloud cover. Nwp models suggest winds are light and favoring southwest movement with w movement forecast by. Hosley.

Original Message :

Received FVXX23 at 13:55 UTC, 12/04/25 from KNES
VA ADVISORY
DTG: 20250412/1353Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/033
INFO SOURCE: GOES-19. VONA. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS.
OBS VA DTG: 12/1310Z
OBS VA CLD: SFC/FL100 N1012 W08414 - N1011 W08413 - N1009 W08416 - N1010 W08417 - N1012 W08414 MOV SW 5KT
SW 5KT
FCST VA CLD +6HR: 12/1900Z SFC/FL100 N1013 W08419 - N1012 W08414 - N1011 W08414 - N1010 W08419 - N1013 W08419
N1013 W08419
FCST VA CLD +12HR: 13/0100Z NO VA EXP
FCST VA CLD +18HR: 13/0700Z NO VA EXP
RMK: VONA RPRTS PSBL VA EMS AND DEGASSING FM
SUMMIT. NO VA OBSD BY WEBCAM DUE TO WX CLD CVR.
NWP MDLS SUG WINDS ARE LGT AND FAVORING SW MOVMT
WITH W MOVMT FCST BY T+6HRS. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250412/2000Z
Volcanic Ash Advisory issued on 2025-04-11 at 19:03 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • Volcanic ash not detected on various satellite products. Weather clouds cover part of summit area. New volcanic ash emission possible at any. Konon.

Original Message :

Received FVXX23 at 19:05 UTC, 11/04/25 from KNES
VA ADVISORY
DTG: 20250411/1903Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/032
INFO SOURCE: GOES-19.
ERUPTION DETAILS: VA EMS ENDED
OBS VA DTG: 11/1840Z
OBS VA CLD: VA NOT IDENTIFIABLE FM STLT DATA
FCST VA CLD +6HR: 12/0030Z NO VA EXP
FCST VA CLD +12HR: 12/0630Z NO VA EXP
FCST VA CLD +18HR: 12/1230Z NO VA EXP
RMK: VA NOT DETECTED ON VARIOUS STLT PRODUCTS. WX
CLDS CVR PART OF SUMMIT AREA. NEW VA EMS PSBL AT
ANY TIME. ...KONON
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-04-11 at 13:13 UTC.

    Key information extracted from original VAA message :


  • Vona report of volcanic ash.
  • Vona report indicating volcanic ash likely. Volcanic ash not seen in satellite or webcam due to meteorological model guidance shows a w-ly move through t+12 hours at flight level 100 (3000m) confidence in height of volcanic ash is low. Kibler.

Original Message :

Received FVXX23 at 13:15 UTC, 11/04/25 from KNES
VA ADVISORY
DTG: 20250411/1313Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/031
INFO SOURCE: GOES-18. VONA. NWP MODELS.
ERUPTION DETAILS: VONA RPRT OF VA
EST VA DTG: 11/1240Z
EST VA CLD: SFC/FL100 N1012 W08414 - N1011 W08413 - N1009 W08420 - N1011 W08420 - N1012 W08414 MOV W 10KT
FCST VA CLD +6HR: 11/1830Z SFC/FL100 N1014 W08423 - N1012 W08414 - N1011 W08414 - N1012 W08423 - N1014 W08423
FCST VA CLD +12HR: 12/0030Z SFC/FL100 N1013 W08423 - N1012 W08414 - N1011 W08414 - N1011 W08423 - N1013 W08423
FCST VA CLD +18HR: 12/0630Z NO VA EXP
RMK: VONA RPRT INDICATING VA LIKELY. VA NOT SEEN
IN SAT OR WEBCAM DUE TO MET CLDS. MODEL GUIDANCE
SHOWS A W-LY MOV THRU T+12 HRS AT FL100.
CONFIDENCE IN HGT OF VA IS LOW. ...KIBLER
NXT ADVISORY: WILL BE ISSUED BY 20250411/1915Z
Volcanic Ash Advisory issued on 2025-04-09 at 20:24 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • Volcanic ash not detected on various satellite products. Weather clouds cover much of summit area. Webcam shows mostly steam/gas emission currently. New volcanic ash emission possible at any. Konon.

Original Message :

Received FVXX23 at 20:26 UTC, 09/04/25 from KNES
VA ADVISORY
DTG: 20250409/2024Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/030
INFO SOURCE: GOES-19. WEBCAM.
ERUPTION DETAILS: VA EMS ENDED
OBS VA DTG: 09/2000Z
OBS VA CLD: VA NOT IDENTIFIABLE FM STLT DATA
FCST VA CLD +6HR: 10/0200Z NO VA EXP
FCST VA CLD +12HR: 10/0800Z NO VA EXP
FCST VA CLD +18HR: 10/1400Z NO VA EXP
RMK: VA NOT DETECTED ON VARIOUS STLT PRODUCTS. WX
CLDS CVR MUCH OF SUMMIT AREA. WEBCAM SHOWS MSTLY
STEAM/GAS EMS CURRENTLY. NEW VA EMS PSBL AT ANY
TIME. ...KONON
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-04-09 at 14:47 UTC.

    Key information extracted from original VAA message :


  • Vona report received.
  • Rcnt vona report received indicating volcanic ash emission moving w. Small volcanic ash emission observation in webcam. Steam observation in satellite imagery moving w. Volcanic ash forecast through t+6 hours based on nwp models and rcnt satellite imagery. Coverdale.

Original Message :

Received FVXX23 at 14:50 UTC, 09/04/25 from KNES
VA ADVISORY
DTG: 20250409/1447Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/029
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VONA RPRT RCVD
OBS VA DTG: 09/1420Z
OBS VA CLD: SFC/FL100 N1012 W08413 - N1012 W08413 - N1010 W08418 - N1012 W08419 - N1012 W08413 MOV W 10KT
FCST VA CLD +6HR: 09/2030Z SFC/FL100 N1012 W08414 - N1012 W08413 - N1005 W08420 - N1011 W08423 - N1012 W08414
FCST VA CLD +12HR: 10/0230Z NO VA EXP
FCST VA CLD +18HR: 10/0830Z NO VA EXP
RMK: RCNT VONA RPRT RCVD INDICATING VA EMS MOVG
W. SMALL VA EMS OBS IN WEBCAM. STEAM OBS IN STLT
IMAGERY MOVG W. VA FCST THRU T+6 HRS BASED ON NWP
MDLS AND RCNT STLT IMAGERY. ...COVERDALE
NXT ADVISORY: WILL BE ISSUED BY 20250409/2045Z
Volcanic Ash Advisory issued on 2025-04-09 at 12:21 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash not observation.
  • No rcnt volcanic ash emission observation in satellite imagery or webcam. Webcam shows emission of steam/gas. No rcnt reports of volcanic ash received. Coverdale.

Original Message :

Received FVXX23 at 12:23 UTC, 09/04/25 from KNES
VA ADVISORY
DTG: 20250409/1221Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/028
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA NOT OBS
OBS VA DTG: 09/1150Z
OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA.
FCST VA CLD +6HR: 09/1800Z NO VA EXP
FCST VA CLD +12HR: 10/0000Z NO VA EXP
FCST VA CLD +18HR: 10/0600Z NO VA EXP
RMK: NO RCNT VA EMS OBS IN STLT IMAGERY OR
WEBCAM. WEBCAM SHOWS EMS OF STEAM/GAS. NO RCNT
RPRTS OF VA RCVD. ...COVERDALE
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-04-09 at 06:29 UTC.

    Key information extracted from original VAA message :


  • Intermittent volcanic ash emission.
  • Intermittent volcanic ash emission obsd by webcam and reported in vona to 1. 5 km above summit. Volcanic ash not obsd by satellite. Nwp models suggest volcanic ash moving ssw with little change in winds forecast through. Hosley.

Original Message :

Received FVXX23 at 06:31 UTC, 09/04/25 from KNES
VA ADVISORY
DTG: 20250409/0629Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/027
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: INTMT VA EMS.
OBS VA DTG: 09/0550Z
OBS VA CLD: SFC/FL130 N1012 W08414 - N1011 W08413 - N1008 W08413 - N1009 W08415 - N1012 W08414 MOV S 10KT
FCST VA CLD +6HR: 09/1200Z SFC/FL130 N1011 W08414 - N1011 W08413 - N1006 W08413 - N1007 W08416 - N1011 W08414
FCST VA CLD +12HR: 09/1800Z NO VA EXP
FCST VA CLD +18HR: 10/0000Z NO VA EXP
RMK: INTMT VA EMS OBSD BY WEBCAM AND RPRTD IN
VONA TO 1.5 KM ABV SUMMIT. VA NOT OBSD BY STLT.
NWP MDLS SUG VA MOVG SSW WITH LTLCG IN WINDS FCST
THRU T+6HRS. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250409/1230Z
Volcanic Ash Advisory issued on 2025-04-09 at 00:28 UTC.

    Key information extracted from original VAA message :


  • Occasional volcanic ash emission.
  • Volcanic ash emission observation in webcam. Volcanic ash not visible in satellite img. Southwest mvmt from summit exp through t+18. Forecast based on model. Gatling.

Original Message :

Received FVXX23 at 00:29 UTC, 09/04/25 from KNES
VA ADVISORY
DTG: 20250409/0028Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/026
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: OCNL VA EMS
EST VA DTG: 09/0000Z
EST VA CLD: SFC/FL100 N1012 W08414 - N1011 W08413 - N1004 W08416 - N1006 W08420 - N1012 W08414 MOV SW 5KT
FCST VA CLD +6HR: 09/0600Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1001 W08420 - N1005 W08424 - N1012 W08414
FCST VA CLD +12HR: 09/1200Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1001 W08419 - N1004 W08423 - N1012 W08414
FCST VA CLD +18HR: 09/1800Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1001 W08420 - N1005 W08424 - N1012 W08414
RMK: VA EMS OBS IN WEBCAM. VA NOT VISIBLE IN STLT
IMG. SW MVMT FM SUMMIT EXP THRU T+18. FCST BASED
ON MDL WINDS. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250409/0630Z
Volcanic Ash Advisory issued on 2025-04-08 at 18:32 UTC.

    Key information extracted from original VAA message :


  • Intermittent volcanic ash emission.
  • Possible volcanic ash emission observation in webcam but volcanic ash not detected in satellite img. Model guidance suggests se mvmt from summit to shift ssw by t+6. Forecast confidence low. Gatling.

Original Message :

Received FVXX23 at 18:35 UTC, 08/04/25 from KNES
VA ADVISORY
DTG: 20250408/1832Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/025
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: INTMT VA EMS
EST VA DTG: 08/1800Z
EST VA CLD: SFC/FL100 N1012 W08413 - N1009 W08407 - N1005 W08410 - N1011 W08414 - N1012 W08413 MOV SE 5KT
FCST VA CLD +6HR: 09/0000Z SFC/FL100 N1011 W08414 - N1011 W08413 - N0959 W08414 - N1001 W08421 - N1011 W08414
FCST VA CLD +12HR: 09/0600Z NO VA EXP
FCST VA CLD +18HR: 09/1200Z NO VA EXP
RMK: PSBL VA EMS OBS IN WEBCAM BUT VA NOT
DETECTED IN STLT IMG. MDL GUIDANCE SUGGESTS SE
MVMT FM SUMMIT TO SHIFT SSW BY T+6. FCST
CONFIDENCE LOW. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250409/0030Z
Volcanic Ash Advisory issued on 2025-04-08 at 12:58 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash em dtctd.
  • Corrected for : vona received of volcanic ash em. Occasional volcanic ash seen on webcam. Nwp models forecast movnt from south to se through t+6 hours. Bsd on vona. Liner.

Original Message :

Received FVXX23 at 13:02 UTC, 08/04/25 from KNES
VA ADVISORY -CORRECTION
DTG: 20250408/1258Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/024
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EM DTCTD
EST VA DTG: 08/1210Z
EST VA CLD: SFC/FL140 N1012 W08414 - N1011 W08413 - N0959 W08408 - N0959 W08420 - N1012 W08414 MOV S 5KT
FCST VA CLD +6HR: 08/1800Z SFC/FL140 N1011 W08413 - N1005 W08358 - N0956 W08407 - N1011 W08414 - N1011 W08413
FCST VA CLD +12HR: 09/0000Z NO VA EXP
FCST VA CLD +18HR: 09/0600Z NO VA EXP
RMK: CORRECTED FOR FL: VONA RCVD OF VA EM. OCNL
VA SEEN ON WEBCAM. NWP MDLS FCST MOVNT FM S TO SE
THRU T+6 HRS. FL BSD ON VONA. ...LINER
NXT ADVISORY: WILL BE ISSUED BY 20250408/1845Z
Volcanic Ash Advisory issued on 2025-04-08 at 00:28 UTC.

    Key information extracted from original VAA message :


  • No volcanic ash emission.
  • Volcanic ash emission not detected in satellite img. No further reports of volcanic ash emission received. Gatling.

Original Message :

Received FVXX23 at 00:29 UTC, 08/04/25 from KNES
VA ADVISORY
DTG: 20250408/0028Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/023
INFO SOURCE: GOES-16. NWP MODELS.
ERUPTION DETAILS: NO VA EMS
OBS VA DTG: 08/0000Z
OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA.
FCST VA CLD +6HR: 08/0600Z NO VA EXP
FCST VA CLD +12HR: 08/1200Z NO VA EXP
FCST VA CLD +18HR: 08/1800Z NO VA EXP
RMK: VA EMS NOT DETECTED IN STLT IMG. NO FURTHER
RPRTS OF VA EMS RCVD. ...GATLING
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-04-07 at 18:27 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Volcanic ash not detected in satellite img. Volcanic ash emission likely continue. E mvmt from summit to shift ese by t+6. Forecast based on model. Gatling.

Original Message :

Received FVXX23 at 18:30 UTC, 07/04/25 from KNES
VA ADVISORY
DTG: 20250407/1827Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/022
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
EST VA DTG: 07/1800Z
EST VA CLD: SFC/FL100 N1015 W08405 - N1010 W08405 - N1011 W08413 - N1012 W08414 - N1015 W08405 MOV E 5KT
FCST VA CLD +6HR: 08/0000Z SFC/FL100 N1012 W08413 - N1011 W08402 - N1006 W08404 - N1011 W08414 - N1012 W08413
FCST VA CLD +12HR: 08/0600Z NO VA EXP
FCST VA CLD +18HR: 08/1200Z NO VA EXP
RMK: VA NOT DETECTED IN STLT IMG. VA EMS LIKELY
CONT. E MVMT FM SUMMIT TO SHIFT ESE BY T+6. FCST
BASED ON MDL WINDS. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250408/0030Z
Volcanic Ash Advisory issued on 2025-04-07 at 12:23 UTC.

    Key information extracted from original VAA message :


  • Ongoing volcanic ash emission.
  • Dense volcanic ash emission noted in webcam imagery. Volcanic ash falling out over and slightly southwest of the summit. Lee.

Original Message :

Received FVXX23 at 12:25 UTC, 07/04/25 from KNES
VA ADVISORY
DTG: 20250407/1223Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/021
INFO SOURCE: GOES-16. WEBCAM. NWP MODELS.
ERUPTION DETAILS: ONGOING VA EMS.
OBS VA DTG: 07/1140Z
OBS VA CLD: SFC/FL100 N1013 W08414 - N1011 W08413 - N1010 W08415 - N1011 W08416 - N1013 W08414 MOV SW 10KT
SW 10KT
FCST VA CLD +6HR: 07/1730Z SFC/FL100 N1013 W08413 - N1011 W08412 - N1010 W08415 - N1012 W08416 - N1013 W08414 - N1013 W08413
N1013 W08414 - N1013 W08413
FCST VA CLD +12HR: 07/2330Z NO VA EXP
FCST VA CLD +18HR: 08/0530Z NO VA EXP
RMK: DENSE VA EMS NOTED IN WEBCAM IMAGERY. VA
FALLING OUT OVER AND SLIGHTLY SW OF THE SUMMIT.
...LEE
NXT ADVISORY: WILL BE ISSUED BY 20250407/1830Z
Volcanic Ash Advisory issued on 2025-04-07 at 06:24 UTC.

    Key information extracted from original VAA message :


  • Occasional volcanic ash emission.
  • Emission of steam gas and volcanic ash obsd on webcam estimate to be moving southwest. Estd from webcam. Possible volcanic ash cloud signature.

Original Message :

Received FVXX23 at 06:27 UTC, 07/04/25 from KNES
VA ADVISORY
DTG: 20250407/0624Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/020
INFO SOURCE: GOES-16. WEBCAM. NWP MODELS.
ERUPTION DETAILS: OCNL VA EMS.
OBS VA DTG: 07/0550Z
OBS VA CLD: SFC/FL100 N1012 W08414 - N1011 W08413 - N1005 W08422 - N1009 W08423 - N1012 W08414 MOV SW 10KT
FCST VA CLD +6HR: 07/1200Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1003 W08422 - N1010 W08426 - N1012 W08414
FCST VA CLD +12HR: 07/1800Z NO VA EXP
FCST VA CLD +18HR: 08/0000Z NO VA EXP
RMK: EMS OF STEAM GAS AND VA OBSD ON WEBCAM EST
TO BE MOVG SW. FL ESTD FM WEBCAM. PSBL VA CLD SIG
OBSD BY STLT MOVG SW BLO BKN THIN WX CLDS. NWP
MDLS NOT FCSTG OBS WELL SO T+6 BASED ON
PERSISTENCE. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250407/1230Z
Volcanic Ash Advisory issued on 2025-04-07 at 00:28 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission reported.
  • Vona received fr volcanic ash emission. Volcanic ash not visible in satellite img possible due to meteorological cloud cover. Model guidance suggests north mvmt from summit to shift ene by t+6. Forecast confidence low. Gatling.

Original Message :

Received FVXX23 at 00:31 UTC, 07/04/25 from KNES
VA ADVISORY
DTG: 20250407/0028Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/019
INFO SOURCE: GOES-16. VONA. NWP MODELS.
ERUPTION DETAILS: VA EMS RPRTD
EST VA DTG: 07/0000Z
EST VA CLD: SFC/FL100 N1022 W08415 - N1020 W08409 - N1011 W08413 - N1011 W08414 - N1022 W08415 MOV N 5KT
FCST VA CLD +6HR: 07/0600Z SFC/FL100 N1021 W08404 - N1015 W08400 - N1011 W08413 - N1012 W08414 - N1021 W08404
FCST VA CLD +12HR: 07/1200Z NO VA EXP
FCST VA CLD +18HR: 07/1800Z NO VA EXP
RMK: VONA RCVD FR VA EMS. VA NOT VISIBLE IN STLT
IMG PSBL DUE TO MET CLD CVR. MDL GUIDANCE
SUGGESTS N MVMT FM SUMMIT TO SHIFT ENE BY T+6.
FCST CONFIDENCE LOW. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250407/0630Z
Volcanic Ash Advisory issued on 2025-04-04 at 10:35 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • Volcanic ash not detected on various satellite products. New volcanic ash emission possible at any. Konon.

Original Message :

Received FVXX20 at 10:37 UTC, 04/04/25 from KNES
VA ADVISORY
DTG: 20250404/1035Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/018
INFO SOURCE: GOES-16.
ERUPTION DETAILS: VA EMS ENDED
OBS VA DTG: 04/1010Z
OBS VA CLD: VA NOT IDENTIFIABLE FM STLT DATA
FCST VA CLD +6HR: 04/1600Z NO VA EXPNO VA EXP
FCST VA CLD +12HR: 04/2200Z NO VA EXP
FCST VA CLD +18HR: 05/0400Z NO VA EXP
RMK: VA NOT DETECTED ON VARIOUS STLT PRODUCTS.
NEW VA EMS PSBL AT ANY TIME. ...KONON
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-04-04 at 04:42 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ongoing.
  • Volcanic ash not detected on satellite but mhtg significant meteorological information indicates volcanic ash emission. No change forecast to model winds at.

Original Message :

Received FVXX20 at 04:44 UTC, 04/04/25 from KNES
VA ADVISORY
DTG: 20250404/0442Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/017
INFO SOURCE: GOES-16. TEGUCIGALPA MWO. NWP
MODELS.
ERUPTION DETAILS: VA EMS ONGOING
EST VA DTG: 04/0420Z
EST VA CLD: SFC/FL100 N1014 W08420 - N1012 W08414 - N1011 W08413 - N1010 W08420 - N1014 W08420 MOV W 5KT
FCST VA CLD +6HR: 04/1030Z SFC/FL100 N1014 W08420 - N1012 W08413 - N1011 W08414 - N1010 W08420 - N1014 W08420
FCST VA CLD +12HR: 04/1630Z NO VA EXP
FCST VA CLD +18HR: 04/2230Z NO VA EXP
RMK: VA NOT DETECTED ON STLT BUT MHTG SIGMET
INDICATES VA EMS. NO CHG FCST TO MDL WINDS AT FL
NXT 6 HR. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250404/1045Z
Volcanic Ash Advisory issued on 2025-04-03 at 22:57 UTC.

    Key information extracted from original VAA message :


  • Ongoing volcanic ash emission.
  • Dense volcanic ash emission noted in cloud cover breaks in webcam. Volcanic ash also seen drifting near and to the w of the summit in infrared satellite imagery. Lee.

Original Message :

Received FVXX20 at 23:00 UTC, 03/04/25 from KNES
VA ADVISORY
DTG: 20250403/2257Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/016
INFO SOURCE: GOES-16. WEBCAM. NWP MODELS.
ERUPTION DETAILS: ONGOING VA EMS.
OBS VA DTG: 03/2220Z
OBS VA CLD: SFC/FL100 N1015 W08419 - N1013 W08413 - N1011 W08413 - N1011 W08419 - N1015 W08419 MOV W 5KT
W 5KT
FCST VA CLD +6HR: 04/0430Z SFC/FL100 N1014 W08419 - N1013 W08413 - N1011 W08413 - N1010 W08419 - N1014 W08419
N1014 W08419
FCST VA CLD +12HR: 04/1030Z SFC/FL100 N1014 W08419 - N1013 W08413 - N1010 W08413 - N1010 W08419 - N1014 W08419
W08419 - N1014 W08419
FCST VA CLD +18HR: 04/1630Z SFC/FL100 N1016 W08416 - N1013 W08413 - N1011 W08413 - N1011 W08419 - N1016 W08416
W08419 - N1016 W08416
RMK: DENSE VA EMS NOTED IN CLD COVER BREAKS IN
WEBCAM. VA ALSO SEEN DRIFTING NEAR AND TO THE W
OF THE SUMMIT IN IR STLT IMAGERY. ...LEE
NXT ADVISORY: WILL BE ISSUED BY 20250404/0500Z
Volcanic Ash Advisory issued on 2025-04-03 at 17:10 UTC.

    Key information extracted from original VAA message :


  • Intermittent volcanic ash emission.
  • Light volcanic ash emission observation in webcam and satellite img move w ext approximate 10nm from summit. Volcanic ash emission likely to continue. A general w mvmt exp through t+18. Forecast based on satellite and model. Gatling.

Original Message :

Received FVXX20 at 17:12 UTC, 03/04/25 from KNES
VA ADVISORY
DTG: 20250403/1710Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/015
INFO SOURCE: GOES-16. WEBCAM. NWP MODELS.
ERUPTION DETAILS: INTMT VA EMS
OBS VA DTG: 03/1640Z
OBS VA CLD: SFC/FL100 N1013 W08422 - N1012 W08413 - N1011 W08413 - N1009 W08422 - N1013 W08422 MOV W 10KT
FCST VA CLD +6HR: 03/2230Z SFC/FL100 N1019 W08423 - N1012 W08413 - N1011 W08414 - N1013 W08426 - N1019 W08423
FCST VA CLD +12HR: 04/0430Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1005 W08425 - N1010 W08426 - N1012 W08414
FCST VA CLD +18HR: 04/1030Z SFC/FL100 N1019 W08423 - N1012 W08413 - N1011 W08414 - N1014 W08426 - N1019 W08423
RMK: LGT VA EMS OBS IN WEBCAM AND STLT IMG MOV W
EXT APRX 10NM FM SUMMIT. VA EMS LIKELY TO CONT. A
GEN W MVMT EXP THRU T+18. FCST BASED ON STLT AND
MDL WINDS. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250403/2315Z
Volcanic Ash Advisory issued on 2025-04-03 at 11:08 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Volcanic ash emission not detected in satellite img. Occasional volcanic ash emission may continue. Model guidance suggests wsw mvmt from summit through t+6. Gatling.

Original Message :

Received FVXX20 at 11:10 UTC, 03/04/25 from KNES
VA ADVISORY
DTG: 20250403/1108Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/014
INFO SOURCE: GOES-16. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
EST VA DTG: 03/1040Z
EST VA CLD: SFC/FL100 N1012 W08413 - N1011 W08413 - N1006 W08423 - N1011 W08425 - N1012 W08413 MOV W 10KT
FCST VA CLD +6HR: 03/1630Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1004 W08427 - N1010 W08429 - N1012 W08413
FCST VA CLD +12HR: 03/2230Z NO VA EXP
FCST VA CLD +18HR: 04/0430Z NO VA EXP
RMK: VA EMS NOT DETECTED IN STLT IMG. OCNL VA EMS
MAY CONT. MDL GUIDANCE SUGGESTS WSW MVMT FM
SUMMIT THRU T+6. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250403/1715Z
Volcanic Ash Advisory issued on 2025-04-03 at 05:08 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ongoing.
  • Volcanic ash not detected on satellite but mhtg significant meteorological information indicates volcanic ash emission. No change forecast to model winds at.

Original Message :

Received FVXX20 at 05:10 UTC, 03/04/25 from KNES
VA ADVISORY
DTG: 20250403/0508Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/013
INFO SOURCE: GOES-16. TEGUCIGALPA MWO. NWP
MODELS.
ERUPTION DETAILS: VA EMS ONGOING
EST VA DTG: 03/0440Z
EST VA CLD: SFC/FL100 N1014 W08421 - N1012 W08413 - N1011 W08414 - N1010 W08421 - N1014 W08421 MOV W 10KT
FCST VA CLD +6HR: 03/1030Z SFC/FL100 N1014 W08422 - N1011 W08413 - N1011 W08413 - N1009 W08422 - N1014 W08422
FCST VA CLD +12HR: 03/1630Z NO VA EXP
FCST VA CLD +18HR: 03/2230Z NO VA EXP
RMK: VA NOT DETECTED ON STLT BUT MHTG SIGMET
INDICATES VA EMS. NO CHG FCST TO MDL WINDS AT FL
NXT 6HR. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250403/1115Z
Volcanic Ash Advisory issued on 2025-04-02 at 23:20 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Volcanic ash emission not obsd in satellite img due to meteorological clouds but volcanic ash emission may be obscured. Wnw mvmt exp to shift wsw by t+6 hours and exp to shift more southwest by t+12 hours. Mvmt and height based on nwp. Bertalan.

Original Message :

Received FVXX20 at 23:24 UTC, 02/04/25 from KNES
VA ADVISORY
DTG: 20250402/2320Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/012
INFO SOURCE: GOES-16. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
EST VA DTG: 02/2250Z
EST VA CLD: SFC/FL100 N1018 W08421 - N1012 W08413 - N1011 W08413 - N1013 W08423 - N1018 W08421 MOV NW 5KT
FCST VA CLD +6HR: 03/0500Z SFC/FL100 N1012 W08414 - N1011 W08413 - N1002 W08426 - N1008 W08429 - N1012 W08414
FCST VA CLD +12HR: 03/1100Z SFC/FL100 N1013 W08413 - N1011 W08413 - N1004 W08427 - N1011 W08429 - N1013 W08413
FCST VA CLD +18HR: 03/1700Z NO VA EXP
RMK: VA EMS NOT OBSD IN STLT IMG DUE TO MET CLDS
BUT VA EMS MAY BE OBSCD. WNW MVMT EXP TO SHIFT WSW
BY T+6 HRS AND EXP TO SHIFT MORE SW BY T+12 HRS. MVMT AND HGT BASED
ON NWP MDLS.
...BERTALAN
NXT ADVISORY: WILL BE ISSUED BY 20250403/0515Z
Volcanic Ash Advisory issued on 2025-04-02 at 17:28 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash em dtctd.
  • Vona received of volcanic ash em movng w from summit. Volcanic ash crly seen on webcam. Wnw movnt to shift to wsw through t+18 hours. Wind movnt and bsd on vona and nwp. Liner.

Original Message :

Received FVXX20 at 17:31 UTC, 02/04/25 from KNES
VA ADVISORY
DTG: 20250402/1728Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/011
INFO SOURCE: GOES-16. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EM DTCTD
EST VA DTG: 02/1640Z
EST VA CLD: SFC/FL100 N1019 W08427 - N1012 W08413 - N1011 W08413 - N1011 W08429 - N1019 W08427 MOV W 5KT
FCST VA CLD +6HR: 02/2230Z SFC/FL100 N1011 W08413 - N1011 W08413 - N0956 W08428 - N1008 W08434 - N1011 W08413
FCST VA CLD +12HR: 03/0430Z SFC/FL100 N1012 W08413 - N1011 W08413 - N0952 W08425 - N1004 W08434 - N1012 W08413
FCST VA CLD +18HR: 03/1030Z SFC/FL100 N1012 W08413 - N1011 W08413 - N0956 W08432 - N1012 W08438 - N1012 W08413
RMK: VONA RCVD OF VA EM MOVNG W FM SUMMIT. VA
CRLY SEEN ON WEBCAM. WNW MOVNT TO SHIFT TO WSW
THRU T+18 HRS. WND MOVNT AND FL BSD ON VONA AND
NWP MDLS. ...LINER
NXT ADVISORY: WILL BE ISSUED BY 20250402/2330Z
Volcanic Ash Advisory issued on 2025-04-02 at 05:40 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • Volcanic ash not detected on various satellite products. Weather clouds cover part of summit area. New volcanic ash emission possible at any. Konon.

Original Message :

Received FVXX20 at 05:42 UTC, 02/04/25 from KNES
VA ADVISORY
DTG: 20250402/0540Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA_RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/010
INFO SOURCE: GOES-16.
ERUPTION DETAILS: VA EMS ENDED
OBS VA DTG: 02/0520Z
OBS VA CLD: VA NOT IDENTIFIABLE FM STLT DATA
FCST VA CLD +6HR: 02/1130Z NO VA EXP
FCST VA CLD +12HR: 02/1730Z NO VA EXP
FCST VA CLD +18HR: 02/2330Z NO VA EXP
RMK: VA NOT DETECTED ON VARIOUS STLT PRODUCTS. WX
CLDS CVR PART OF SUMMIT AREA. NEW VA EMS PSBL AT
ANY TIME. ...KONON
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-04-01 at 23:53 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Emission of gas and steam observation in webcam with possible light volcanic ash. Occasional volcanic ash emission may continue. Model guidance suggests wsw mvmt from summit exp through t+6. Gatling.

Original Message :

Received FVXX20 at 23:55 UTC, 01/04/25 from KNES
VA ADVISORY
DTG: 20250401/2353Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/009
INFO SOURCE: GOES-16. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
EST VA DTG: 01/2330Z
EST VA CLD: SFC/FL100 N1013 W08414 - N1011 W08413 - N1005 W08422 - N1011 W08424 - N1013 W08414 MOV SW 5KT
FCST VA CLD +6HR: 02/0530Z SFC/FL100 N1012 W08429 - N1012 W08414 - N1011 W08413 - N1005 W08426 - N1012 W08429
FCST VA CLD +12HR: 02/1130Z NO VA EXP
FCST VA CLD +18HR: 02/1730Z NO VA EXP
RMK: EMS OF GAS AND STEAM OBS IN WEBCAM WITH PSBL
LGT VA. OCNL VA EMS MAY CONT. MDL GUIDANCE
SUGGESTS WSW MVMT FM SUMMIT EXP THRU T+6.
...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250402/0600Z
Volcanic Ash Advisory issued on 2025-04-01 at 18:04 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission observation.
  • Vona received. Volcanic ash emission visible in webcam but not detected in satellite img. Model guidance suggests w mvmt from summit to shift wsw by t+6. Forecast confidence low. Gatling.

Original Message :

Received FVXX20 at 18:06 UTC, 01/04/25 from KNES
VA ADVISORY
DTG: 20250401/1804Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/008
INFO SOURCE: GOES-16. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS OBS
EST VA DTG: 01/1730Z
EST VA CLD: SFC/FL100 N1015 W08422 - N1012 W08413 - N1011 W08414 - N1010 W08422 - N1015 W08422 MOV W 5KT
FCST VA CLD +6HR: 01/2330Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1004 W08425 - N1010 W08428 - N1012 W08413
FCST VA CLD +12HR: 02/0530Z NO VA EXP
FCST VA CLD +18HR: 02/1130Z NO VA EXP
RMK: VONA RCVD. VA EMS VISIBLE IN WEBCAM BUT NOT
DETECTED IN STLT IMG. MDL GUIDANCE SUGGESTS W
MVMT FM SUMMIT TO SHIFT WSW BY T+6. FCST
CONFIDENCE LOW. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250402/0000Z
Volcanic Ash Advisory issued on 2025-04-01 at 00:09 UTC.

    Key information extracted from original VAA message :


  • No volcanic ash emission.
  • Volcanic ash emission not detected in satellite img. No further reports of volcanic ash emission received. Gatling.

Original Message :

Received FVXX20 at 00:11 UTC, 01/04/25 from KNES
VA ADVISORY
DTG: 20250401/0009Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/007
INFO SOURCE: GOES-16. NWP MODELS.
ERUPTION DETAILS: NO VA EMS
OBS VA DTG: 31/2340Z
OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA.
FCST VA CLD +6HR: 01/0600Z NO VA EXP
FCST VA CLD +12HR: 01/1200Z NO VA EXP
FCST VA CLD +18HR: 01/1800Z NO VA EXP
RMK: VA EMS NOT DETECTED IN STLT IMG. NO FURTHER
RPRTS OF VA EMS RCVD. ...GATLING
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-03-31 at 18:10 UTC.

    Key information extracted from original VAA message :


  • Possible volcanic ash emission.
  • Volcanic ash not visible in satellite img maybe due to meteorological cloud cover. Volcanic ash emission likely to continue. North mvmt from summit exp through t+6. Forecast confidence low. Gatling.

Original Message :

Received FVXX20 at 18:11 UTC, 31/03/25 from KNES
VA ADVISORY
DTG: 20250331/1810Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/006
INFO SOURCE: GOES-16. NWP MODELS.
ERUPTION DETAILS: PSBL VA EMS
EST VA DTG: 31/1740Z
EST VA CLD: SFC/FL100 N1023 W08411 - N1011 W08413 - N1011 W08414 - N1023 W08418 - N1023 W08411 MOV N 5KT
FCST VA CLD +6HR: 31/2330Z SFC/FL100 N1026 W08415 - N1011 W08413 - N1011 W08414 - N1023 W08423 - N1026 W08415
FCST VA CLD +12HR: 01/0530Z NO VA EXP
FCST VA CLD +18HR: 01/1130Z NO VA EXP
RMK: VA NOT VISIBLE IN STLT IMG MAYBE DUE TO MET
CLD CVR. VA EMS LIKELY TO CONT. N MVMT FM SUMMIT
EXP THRU T+6. FCST CONFIDENCE LOW. ...GATLING
NXT ADVISORY: WILL BE ISSUED BY 20250401/0015Z
Volcanic Ash Advisory issued on 2025-03-31 at 12:14 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission obsd.
  • Volcanic ash emission reported by vona to 600m above summit. Webcam shows continuous steam and gas emission with occasional volcanic ash emission. Satellite shows emission reaching about 10 nmi w-wsw of summit. Volcanic ash forecast to move wnw by. Hosley.

Original Message :

Received FVXX20 at 12:17 UTC, 31/03/25 from KNES
VA ADVISORY
DTG: 20250331/1214Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/005
INFO SOURCE: GOES-16. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS OBSD.
OBS VA DTG: 31/1150Z
OBS VA CLD: SFC/FL100 N1012 W08414 - N1011 W08413 - N1009 W08423 - N1011 W08423 - N1012 W08414 MOV W 10KT
W 10KT
FCST VA CLD +6HR: 31/1800Z SFC/FL100 N1017 W08421 - N1012 W08413 - N1011 W08414 - N1011 W08424 - N1017 W08421
N1017 W08421
FCST VA CLD +12HR: 01/0000Z NO VA EXP
FCST VA CLD +18HR: 01/0600Z NO VA EXP
RMK: VA EMS RPRTD BY VONA TO 600M ABV SUMMIT.
WEBCAM SHOWS CONS STEAM AND GAS EMS WITH OCNL VA
EMS. STLT SHOWS EMS REACHING ABT 10 NMI W-WSW OF
SUMMIT. VA FCST TO MOV WNW BY T+6HRS. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250331/1815Z
Volcanic Ash Advisory issued on 2025-03-29 at 11:12 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission has disp in satellite imagery. No new emission.

Original Message :

Received FVXX23 at 11:14 UTC, 29/03/25 from KNES
VA ADVISORY
DTG: 20250329/1112Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/004
INFO SOURCE: GOES-16. NWP MODELS. VOLCAT.
ERUPTION DETAILS:
OBS VA DTG: 29/1040Z
OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA.
FCST VA CLD +6HR: 29/1630Z NO VA EXP
FCST VA CLD +12HR: 29/2230Z NO VA EXP
FCST VA CLD +18HR: 30/0430Z NO VA EXP
RMK: VA EMS HAS DISP IN STLT IMAGERY. NO NEW EMS
OBS. NO RPRTS OF VA EMS. ...FISHER
NXT ADVISORY: NO FURTHER ADVISORIES
Volcanic Ash Advisory issued on 2025-03-29 at 05:25 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ongoing.
  • Volcanic ash not detected on satellite. Mhtg significant meteorological information indicates volcanic ash emission. Model winds at forecast to veer?.

Original Message :

Received FVXX23 at 05:27 UTC, 29/03/25 from KNES
VA ADVISORY
DTG: 20250329/0525Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/003
INFO SOURCE: GOES-16. TEGUCIGALPA MWO. NWP
MODELS.
ERUPTION DETAILS: VA EMS ONGOING
EST VA DTG: 29/0500Z
EST VA CLD: SFC/FL100 N1012 W08414 - N1011 W08413 - N1009 W08416 - N1011 W08417 - N1012 W08414 MOV SW 10KT
FCST VA CLD +6HR: 29/1100Z SFC/FL100 N1013 W08417 - N1012 W08414 - N1011 W08414 - N1010 W08417 - N1013 W08417
FCST VA CLD +12HR: 29/1700Z NO VA EXP
FCST VA CLD +18HR: 29/2300Z NO VA EXP
RMK: VA NOT DETECTED ON STLT. MHTG SIGMET
INDICATES VA EMS. MDL WINDS AT FL FCST TO VEER?
NXT 6 HR BECMG MORE FM THE E. ...KONON
NXT ADVISORY: WILL BE ISSUED BY 20250329/1130Z
Volcanic Ash Advisory issued on 2025-03-28 at 23:44 UTC.

    Key information extracted from original VAA message :


  • Volc activity likely continuing.
  • Volcanic ash cloud possibly obsd moving wsw from the summit. Webcam obscured by weather cloud cover. Vona reports volcanic ash reached 500m above summit today. Nwp models forecast volcanic ash to move ssw by t+6. Hosley.

Original Message :

Received FVXX23 at 23:45 UTC, 28/03/25 from KNES
VA ADVISORY
DTG: 20250328/2344Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/002
INFO SOURCE: GOES-16. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VOLC ACT LKLY CONTG
OBS VA DTG: 28/2300Z
OBS VA CLD: SFC/FL100 N1012 W08413 - N1011 W08413 - N1007 W08426 - N1012 W08427 - N1012 W08413 MOV W 10KT
FCST VA CLD +6HR: 29/0500Z SFC/FL100 N1012 W08413 - N1011 W08413 - N1002 W08415 - N1004 W08420 - N1012 W08413
FCST VA CLD +12HR: 29/1100Z NO VA EXP
FCST VA CLD +18HR: 29/1700Z NO VA EXP
RMK: VA CLD PSBLY OBSD MOVG WSW FM THE SUMMIT.
WEBCAM OBSCD BY WX CLD CVR. VONA RPRTS VA REACHED
500M ABV SUMMIT TODAY. NWP MDLS FCST VA TO MOV
SSW BY T+6. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250329/0545Z
Volcanic Ash Advisory issued on 2025-03-28 at 17:46 UTC.

    Key information extracted from original VAA message :


  • Multiple small volcanic ash emission.
  • Very small volcanic ash clouds obsd by webcam at 17:72 UTC 17:73 UTC and 17:74 UTC on webcam among greater steam and gas emission. Volcanic ash clouds barely reaching caldera level. Volcanic ash not obsd by satellite partly due to weather clouds obscuring summit. Estd from webcam and nwp models with little change forecast. Hosley.

Original Message :

Received FVXX23 at 17:48 UTC, 28/03/25 from KNES
VA ADVISORY
DTG: 20250328/1746Z
VAAC: WASHINGTON
VOLCANO: POAS 345040
PSN: N1011 W08413
AREA: COSTA?RICA
SUMMIT ELEV: 8848 FT [2697 M]
ADVISORY NR: 2025/001
INFO SOURCE: GOES-16. WEBCAM. NWP MODELS.
ERUPTION DETAILS: MULT SML VA EMS.
OBS VA DTG: 28/1720Z
OBS VA CLD: SFC/FL090 N1014 W08419 - N1012 W08413 - N1011 W08413 - N1011 W08419 - N1014 W08419 MOV W 10KT
FCST VA CLD +6HR: 28/2330Z SFC/FL090 N1016 W08421 - N1012 W08413 - N1011 W08414 - N1011 W08422 - N1016 W08421
FCST VA CLD +12HR: 29/0530Z NO VA EXP
FCST VA CLD +18HR: 29/1130Z NO VA EXP
RMK: VRY SML VA CLDS OBSD BY WEBCAM AT 1725Z
1732Z AND 1741Z ON WEBCAM AMONG GRTR STEAM AND
GAS EMS. VA CLDS BARELY REACHING CALDERA LVL. VA
NOT OBSD BY STLT PTLY DUE TO WX CLDS OBSCG
SUMMIT. FL ESTD FM WEBCAM AND NWP MDLS WITH LTLCG
FCST. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20250328/2345Z
Volcanic Ash Advisory issued on 2025-03-27 at 07:50 UTC.

    Key information extracted from original VAA message :



Original Message :