Overall Green Volcanic eruption for Ruiz, Nevado del
in Colombia

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.



Volcanic Ash Advisory issued on 2023-05-05 at 00:21 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash not obsd.
  • Volcanic ash em not recently seen on satellite imagery. Volcanic ash from previous em disptd. Advisory ended. Kim.

Original Message :

Volcanic Ash Advisory issued on 2023-05-04 at 18:44 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash em reported.
  • Volcanic ash em not seen on satellite imagery due to cloud cover but volcano reports volcanic ash around flight level 230 (6900m) moving nw from summit. Kim.

Original Message :

Volcanic Ash Advisory issued on 2023-05-04 at 12:11 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • Prev volcanic ash emission has ended. Nothing new detected from satellite data. No hotspot detected. Webcam shows clear weather over summit with intermittent gas emission seen. Brown.

Original Message :

Volcanic Ash Advisory issued on 2023-05-04 at 06:46 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash em obsd around 05:30 UTC.
  • Volcano reports volcanic ash em to 1. 4 km above summit moving nw. G16 clrly shows volcanic ash em moving nw. Webcam still shows emission possibly containing volcanic ash. Nwp models forecast little change in volcanic ash cloud movement through. Hosley.

Original Message :

Volcanic Ash Advisory issued on 2023-05-03 at 08:38 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 :

Volcanic Ash Advisory issued on 2023-05-03 at 02:56 UTC.

    Key information extracted from original VAA message :


  • Continue volcanic ash emission observation.
  • Continue volcanic ash emission observation move nw from summit volcanic ash forecast to continue nw move through t+12hrs before disp. Volcano activity low to moderate. Fisher.

Original Message :

Volcanic Ash Advisory issued on 2023-05-02 at 21:07 UTC.

    Key information extracted from original VAA message :


  • New vam emission.
  • Volcanic ash detected on satellite moving w of summit. Webcam shows summit obscure by weather clouds but vona confirms volcanic ash emission. No change forecast to model winds at next 6 hour. Konon.

Original Message :

Volcanic Ash Advisory issued on 2023-05-02 at 20:04 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • No recent reports of activity. Volcanic ash not detected on various satellite products. New volcanic ash emission possible at any. Konon.

Original Message :

Volcanic Ash Advisory issued on 2023-05-02 at 14:08 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission observation.
  • Discrete volcanic ash emission observation in satellite img move southwest ext at least 30 nmi from summit. Southwest mvmt exp through t+6. And mvmt based on satellite and nwp. Gatling.

Original Message :

Volcanic Ash Advisory issued on 2023-05-02 at 13:07 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission observation.
  • Vona received and volcanic ash emission observation in webcam and satellite. Model guidance suggests wnw mvmt from summit through t+6. And mvmt based on vona, satellite and nwp. Gatling.

Original Message :

Volcanic Ash Advisory issued on 2023-05-01 at 19:03 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • No recent reports of activity. 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 :

Volcanic Ash Advisory issued on 2023-05-01 at 13:51 UTC.

    Key information extracted from original VAA message :


  • Discrete volcanic ash emission.
  • Volcanic ash emission observation in satellite img move w ext 20 nmi from summit. W mvmt exp through t+6. And mvmt based on satellite and nwp. Gatling.

Original Message :

Volcanic Ash Advisory issued on 2023-04-27 at 20:26 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • A single puff from earlier dispersed. No new activity noted in web cam or satellite imagery. No new reports. Lee.

Original Message :

Volcanic Ash Advisory issued on 2023-04-27 at 14:40 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission observation.
  • Vona received and discrete volcanic ash emission observation in satellite img move nw ext about 20 nmi from summit. Nw mvmt exp through t+6. And mvmt based on satellite and nwp. Gatling.

Original Message :

Volcanic Ash Advisory issued on 2023-04-26 at 22:28 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • No recent reports of activity. Volcanic ash not detected on various satellite products. New volcanic ash emission possible at any. Konon.

Original Message :

Volcanic Ash Advisory issued on 2023-04-26 at 16:29 UTC.

    Key information extracted from original VAA message :


  • Poss volcanic ash em seen in satellite.
  • Poss volcanic ash em seen in satellite move w from summit. Vona report indicates a more southwest move. Model guidance shows a w/wsw move at t+6 hours. Move and height based on a combo of sat, nwp and vona. Kibler.

Original Message :

Volcanic Ash Advisory issued on 2023-04-25 at 18:21 UTC.

    Key information extracted from original VAA message :


  • No volcanic ash emission.
  • Volcanic ash emission not observation in satellite img. Previous volcanic ash emission have dissipated. No further reports of volcanic ash emission received. Gatling.

Original Message :

Volcanic Ash Advisory issued on 2023-04-25 at 12:28 UTC.

    Key information extracted from original VAA message :


  • Intermittent volcanic ash emission.
  • Vona reports volcanic ash em at 10:05 UTC to 2. 2km above summit moving nw. Volcanic ash cloud obsd by webcam on 10:05 UTC webcam volcanic ash cloud obsd moving w. Little change forecast in volcanic ash cloud movement through. Hosley.

Original Message :

Volcanic Ash Advisory issued on 2023-04-25 at 06:36 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash em based on vona.
  • Several vona were received for ru:ui UTC however, volcanic ash is not observation on satellite due to dense weather volcanic ash is based on vona information and nwp model wind. Zhu.

Original Message :

Volcanic Ash Advisory issued on 2023-04-21 at 23:45 UTC.

    Key information extracted from original VAA message :


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

Original Message :

Volcanic Ash Advisory issued on 2023-04-21 at 18:12 UTC.

    Key information extracted from original VAA message :


  • Poss volcanic ash emission.
  • Volcanic ash not visible in satellite img. Summit obscure by heavy meteorological occasional volcanic ash emission may continue. Model guidance suggests north east mvmt from summit. Forecast confidence low. Gatling.

Original Message :

Volcanic Ash Advisory issued on 2023-04-21 at 12:36 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash emission.
  • Volcanic ash not detected on satellite due to thick high weather clouds in simmit area. Webcam shows volcanic ash emission and vona confirms. Model winds at lgt/vrb so volcanic ash position conf low at t+6 hour. Konon.

Original Message :

Volcanic Ash Advisory issued on 2023-04-20 at 10:27 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash has dispd.
  • Volcanic ash cloud prompting vona and prev advisory has now dispd. No new volcanic ash clouds have been obsd by satellite under mostly clear skies until around 09 UTC. Webcam shows very small emission of only steam and vapor. No rcnt reports of volcanic ash have been received. Hosley.

Original Message :

Volcanic Ash Advisory issued on 2023-04-20 at 04:47 UTC.

    Key information extracted from original VAA message :


  • Moderate volcanic ash em reported.
  • Vona reports volcanic ash cloud moving se to flight level 240 (7200m) and possibly higher. Volcanic ash cloud arcing around side of summit with most dense volcanic ash to north. Nwp models not handling.

Original Message :

Volcanic Ash Advisory issued on 2023-04-18 at 19:06 UTC.

    Key information extracted from original VAA message :


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

Original Message :

Volcanic Ash Advisory issued on 2023-04-18 at 13:16 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash em.
  • Volcanic ash em seen on satellite imagery moving se from summti. Volcano rrpts volcanic ash around flight level 220 (6600m) nwp models. Kim.

Original Message :

Volcanic Ash Advisory issued on 2023-04-16 at 17:46 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash not obsd.
  • Volcanic ash not obsd due to xtnsv weather cloud cover obscuring summit on both satellite imagery and webcam. No reports of volcanic ash have been received. Hosley.

Original Message :

Volcanic Ash Advisory issued on 2023-04-16 at 12:05 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash emission.
  • Volcanic ash not detected on satellite due to thick weather clouds in area. Vona and webcam indicate volcanic ash emission. Model winds at no change forecast next 6 hour. Konon.

Original Message :

Volcanic Ash Advisory issued on 2023-04-16 at 06:23 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission obsd.
  • Volcanic ash emission obsd in satellite and volcanic ash clouds seen appx 7nmi wnw from summit before obscure by meteorological nwp model forecast little change through. Zeng.

Original Message :

Volcanic Ash Advisory issued on 2023-04-16 at 00:24 UTC.

    Key information extracted from original VAA message :


  • Vona report of volcanic ash.
  • Vona report of volcanic ash move nw. Volcanic ash not seen due to meteorological move and height match well with model guidance. Nwp indicates a continue wnw move through t+6 hours. Move and height based on vona and nwp. Kibler.

Original Message :

Volcanic Ash Advisory issued on 2023-04-14 at 19:03 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • Volcanic ash from earlier emission dispersed. No new activity noted in web cam or satellite imagery. No recent reports. Lee.

Original Message :

Volcanic Ash Advisory issued on 2023-04-14 at 13:08 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission observation.
  • Vona received and volcanic ash emission observation in satellite img move southwest and ext about 20 nmi from summit. Southwest mvmt exp through t+6. And mvmt based on vona, satellite and nwp. Gatling.

Original Message :

Volcanic Ash Advisory issued on 2023-04-14 at 07:11 UTC.

    Key information extracted from original VAA message :


  • Light volcanic ash emission.
  • Volcanic ash observation in satellite moving southwest from summit blw flight level 210 (6300m) ash is not detectable beyond 10nmi. Ramirez.

Original Message :

Volcanic Ash Advisory issued on 2023-04-14 at 01:13 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash em.
  • A small puff was noted by vona and later seen in satellite imagery. Nothing seen in web cam due to darkness. Volcanic ash move to the southwest of the summit. Lee.

Original Message :

Volcanic Ash Advisory issued on 2023-04-12 at 17:48 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash not obsd.
  • Volcanic ash ems/clds not obsd in satellite and webcam. No further report received. Zeng.

Original Message :

Volcanic Ash Advisory issued on 2023-04-12 at 11:55 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission observation.
  • Light volcanic ash emission observation from satellite and webcam moving north east from summit. Vona repeat received indicating direction and model winds exp to to north east through t+6 hours. Brown.

Original Message :

Volcanic Ash Advisory issued on 2023-04-11 at 21:56 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash not detected.
  • Corrected for observation volcanic ash cloud. Volcanic ash not seen in satellite imagery. No reports of activity in over 6. Turk.

Original Message :

Volcanic Ash Advisory issued on 2023-04-11 at 16:25 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash emission.
  • New volcanic ash is observation move w up to 18nm from the summit, but could be further the dense surrounding weather flight level 250 (7500m) is from vona information. Nwp model indicates a continue w to nw move through. Zhu.

Original Message :

Volcanic Ash Advisory issued on 2023-04-11 at 12:53 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash is not observation on satellite or webcam for the past 6 hours. There has been no reprt of volcanic ash and no hot spot can be observation. Zhu.

Original Message :

Volcanic Ash Advisory issued on 2023-04-11 at 06:53 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash emission.
  • Volcanic ash detected on satellite moving southwest of summit. Webcam shows volcanic ash emission and vona confirms. Model winds at forecast to veer next 6 hour becoming more from the e. Konon.

Original Message :

Volcanic Ash Advisory issued on 2023-04-10 at 20:16 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash not observation.
  • Volcanic ash not seen from satellite and there have been no additional reports of activity. Turk.

Original Message :

Volcanic Ash Advisory issued on 2023-04-10 at 14:31 UTC.

    Key information extracted from original VAA message :


  • Vona report of volcanic ash and confirmed in satellite.
  • Vona report of volcanic ash and confirmed in satellite move north from summit. Volcanic ash extend around 10 to 15 nm from summit. Model guidance shows a n-ly move through t+6 hours. Move and height based on sat, vona and nwp. Kibler.

Original Message :

Volcanic Ash Advisory issued on 2023-04-09 at 13:21 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • Volcanic ash emission has ended. No new volcanic ash signatures detected from satellite or webcam. No rcnt repeats of volcanic ash activity. Brown.

Original Message :

Volcanic Ash Advisory issued on 2023-04-09 at 07:50 UTC.

    Key information extracted from original VAA message :


  • Continue volcanic ash emission observation.
  • Continue volcanic ash emission observation move e from summit. Volcanic ash forecast to continue e move through t+12hrs before disp. Volcano activity moderate. Fisher.

Original Message :

Volcanic Ash Advisory issued on 2023-04-09 at 01:58 UTC.

    Key information extracted from original VAA message :


  • Intermittent volcanic ash emission.
  • Volcanic ash em reported by vona with volcanic ash cloud moving ese. Volcanic ash cloud obsd by satellite about 10 north mi ese of summit. Nwp models not forecasting obsd volcanic ash cloud well so confidence only medium in t+6. Hosley.

Original Message :

Volcanic Ash Advisory issued on 2023-04-08 at 20:02 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash em reported.
  • Vona reports possible volcanic ash em around 18:49 UTC volcanic ash cloud.

Original Message :

Volcanic Ash Advisory issued on 2023-04-07 at 16:19 UTC.

    Key information extracted from original VAA message :


  • No volcanic ash emission.
  • Volcanic ash not visible in satellite img. All previous volcanic ash emission have dissipated. Gatling.

Original Message :

Volcanic Ash Advisory issued on 2023-04-07 at 10:28 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash emission.
  • Volcanic ash detected on satellite moving se of summit. Vona indicates volcanic ash emission. No change forecast to model winds at.

Original Message :

Volcanic Ash Advisory issued on 2023-04-07 at 07:26 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission ended.
  • No recent reports of activity. Volcanic ash not detected on various satellite products. New volcanic ash emission possible at any. Konon.

Original Message :

Volcanic Ash Advisory issued on 2023-04-07 at 01:30 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash em repeted.
  • Volcanic ash not seen on satellite due to weather clouds but volcano reports volcanic ash around flight level 190 (5700m) mvg southwest from summit. Nwp models. Kim.

Original Message :

Volcanic Ash Advisory issued on 2023-04-06 at 12:49 UTC.

    Key information extracted from original VAA message :


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

Original Message :

Volcanic Ash Advisory issued on 2023-04-06 at 06:54 UTC.

    Key information extracted from original VAA message :


  • Vona report received.
  • Rcnt vona report indicates possible volcanic ash emission. Nothing seen in satellite or webcam due to weather volcanic ash based on vona. Volcanic ash forecast through t+6 hours based on nwp. Coverdale.

Original Message :

Volcanic Ash Advisory issued on 2023-04-06 at 03:11 UTC.

    Key information extracted from original VAA message :


  • No rcnt volcanic ash observation.
  • No rcnt volcanic ash emission observation in satellite imagery. Volcanic ash not crntly seen in webcam. No rcnt reports of volcanic ash. Occasional hotspot in satellite. Coverdale.

Original Message :

Volcanic Ash Advisory issued on 2023-04-05 at 21:18 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash reported.
  • Volcanic ash em not detected on satellite due to cloud cover but volcano reports volcanic ash around flight level 230 (6900m) moving sse from summit. A south movt expected. Kim.

Original Message :

Volcanic Ash Advisory issued on 2023-04-05 at 20:07 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash not obsd.
  • Volcanic ash em not recenlty seen on satellite imagery. Volcanic ash from ealier em disptd. Kim.

Original Message :

Volcanic Ash Advisory issued on 2023-04-05 at 14:31 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission observation.
  • Vona received fr volcanic ash emission and occasional volcanic ash emission observation in satellite move southwest from summit. Mvmt to shift more south by t+6. And mvmt based on vona, satellite and nwp. Gatling.

Original Message :

Volcanic Ash Advisory issued on 2023-04-05 at 08:29 UTC.

    Key information extracted from original VAA message :


  • Intermittent volcanic ash emission.
  • Vona reports volcanic ash em to flight level 200 (6000m) moving southwest which is also obsd by g16. Nwp models also agree and forecast volcanic ash to move ssw-ward by. Hosley.

Original Message :

Volcanic Ash Advisory issued on 2023-04-05 at 02:34 UTC.

    Key information extracted from original VAA message :


  • Intermittent volcanic ash emission.
  • Vona reports volcanic ash em to 1. 1 km above summit moving wnw. Volcanic ash cloud obsd by g16 moving between w and wnw. From vona. Nwp models poorly forecasting obsd volcanic ash cloud movement so low-med confidence in t+6. Hosley.

Original Message :

Volcanic Ash Advisory issued on 2023-04-05 at 01:04 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash not observation in satellite.
  • Volcanic ash not observation in satellite with recently clearing meteorological most recent vona repeat was 3 hours ago. Clark.

Original Message :

Volcanic Ash Advisory issued on 2023-04-04 at 19:08 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash em observation in satellite.
  • Volcanic ash cloud observation move southwest 20 nm from summit amidst meteorological cloud cover. Observation volcanic ash estd from nwp models with lower confidence due to meteorological mvmt forecast to turn to ssw by thunder +6 hours. Clark.

Original Message :

Volcanic Ash Advisory issued on 2023-04-04 at 06:07 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission have ceased.
  • Volcanic ash not obsd by either satellite or webcam. No reports received for volcanic ash emission since 01:30 UTC. Hosley.

Original Message :

Volcanic Ash Advisory issued on 2023-04-04 at 00:15 UTC.

    Key information extracted from original VAA message :


  • Vona report received.
  • Rcnt vona report received indicating volcanic ash emission. Possible emission observation in webcam before dark. Satellite imagery obscure by weather volcanic ash based on vona. Volcanic ash forecast through t+6 hours based on nwp. Coverdale.

Original Message :

Volcanic Ash Advisory issued on 2023-04-03 at 02:14 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash not obsd.
  • Volcanic ash cloud prompting earlier advisory moved southwest and dispd. Volcanic ash not obsd since with no rcnt reports of volcanic ash emission. Hosley.

Original Message :

Volcanic Ash Advisory issued on 2023-04-02 at 20:47 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash emission.
  • Volcanic ash detected on satellite moving southwest of summit. Vona indicates volcanic ash emission. No change forecast to model winds at.

Original Message :

Volcanic Ash Advisory issued on 2023-04-02 at 09:56 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash not obsd.
  • Volcanic ash not obsd by either satellite or webcam. Vona reports volcanic ash emission ended at 06:38 UTC any volcanic ash clouds emitted before then have dispd. Hosley.

Original Message :