Overall Orange Volcanic eruption for Soufriere St. Vincent
in Saint Vincent and the Grenadines

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 2021-04-23 at 14:42 UTC.

    Key information extracted from original VAA message :


  • Reminent volcanic ash disp.
  • Reminent volcanic ash has disp. No new volcanic ash seen in satellite data under mostly clear. Tuggle.

Original Message :

Volcanic Ash Advisory issued on 2021-04-23 at 09:10 UTC.

    Key information extracted from original VAA message :


  • Remnant volcanic ash only.
  • Remnant volcanic ash to flight level 170 (5100m) centered 210 nm nw of the summit while remnant volcanic ash to flight level 250 (7500m) was 115 nm e of the summit. All remnant volcanic ash forecast to disp 6 hours. Occasional hot spot at summit. Turk.

Original Message :

Volcanic Ash Advisory issued on 2021-04-23 at 03:14 UTC.

    Key information extracted from original VAA message :


  • Remnant volcanic ash and low level em.
  • Volcanic ash at flight level 220 (6600m) centered 170 nm nw of summit. Volcanic ash to flight level 250 (7500m) centered 90 nm north east of summit. Low level em to flight level 70 (2100m) ext 140 nm wnw of summit. Observation volcanic ash at flight level 250 (7500m) does not agree with model forecast winds so height uncertain. Turk.

Original Message :

Volcanic Ash Advisory issued on 2021-04-22 at 21:16 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash clouds observation in satellite.
  • Light remnant volcanic ash clouds from earlier em observation in satellite extending nne of summit approximate 74 nmi at flight level 100 (3000m) and approximate 98 nmi nw of summit at flight level 280 (8400m) based on nwp model gdnc winds, mvmt and nw volcanic ash cloud thicker and moving quickly nw. Nne volcanic ash clouds disspitg. Jlevine.

Original Message :

Volcanic Ash Advisory issued on 2021-04-22 at 16:35 UTC.

    Key information extracted from original VAA message :


  • New eruption around 22 1510 UTC.
  • New eruption around 22/1510z. Volcanic ash at flight level 120 (3600m) move north from summit with gradual turn by t+12 to the nw. Volcanic ash at flight level 250 (7500m) move wnw from summit with gradual turn to the wsw by t+6. Height and move and speed based on nwp and ash3d and satellite. Tuggle.

Original Message :

Volcanic Ash Advisory issued on 2021-04-22 at 15:31 UTC.

    Key information extracted from original VAA message :


  • New eruption around 22 1510 UTC.
  • We have received information suggesting a possible volcanic ash eruption. We will gather further information and issue a full advisory as soon as possible.

Original Message :

Volcanic Ash Advisory issued on 2021-04-19 at 18:33 UTC.

    Key information extracted from original VAA message :


  • Prev volcanic ash emission disp.
  • Prev volcanic ash emission have disp. No new volcanic ash emission seen in satellite data under clear conditions. Tuggle.

Original Message :

Volcanic Ash Advisory issued on 2021-04-19 at 13:03 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash emission.
  • New and remnant volcanic ash emission observation from satellite data moving w at flight level 100 (3000m) remnant volcanic ash emission moving wsw at flight level 230 (6900m) new volcanic ash emission moving ssw at flight level 260 (7800m) remnant volcanic ash to dissipate by // end part 01 //.

Original Message :

Volcanic Ash Advisory issued on 2021-04-19 at 10:08 UTC.

    Key information extracted from original VAA message :


  • No current eruption. Detached volcanic ash.
  • No current volcanic ash emission detected from summit on satellite. Two detached thin volcanic ash plumes from eruption ydy. One to flight level 100 (3000m) moving w and another to flight level 230 (6900m) moving southwest. Both volcanic ash plumes should dissipate by t+12 hour. Konon.

Original Message :

Volcanic Ash Advisory issued on 2021-04-19 at 04:08 UTC.

    Key information extracted from original VAA message :


  • No current eruption. Detached volcanic ash.
  • Vaa updated early due to volcanic ash mvmnt. No current volcanic ash emission detected but two detached volcanic ash plumes likely to move further than earlier forecast. Volcanic ash to flight level 100 (3000m) to moving w and flight level 230 (6900m) moving southwest. New volcanic ash possible at any. Konon.

Original Message :

Volcanic Ash Advisory issued on 2021-04-19 at 02:02 UTC.

    Key information extracted from original VAA message :


  • Continuous volcanic ash emission.
  • Continuous volcanic ash emission move w from summit ext 110 nm. Volcanic ash em move southwest centered 60 nm southwest from summit. Nwp models forecast little change in wind direction through t+12. Tuggle.

Original Message :

Volcanic Ash Advisory issued on 2021-04-18 at 23:34 UTC.

    Key information extracted from original VAA message :


  • Continuous volcanic ash emission.
  • Continuous volcanic ash emission move w from summit ext 60nm at flight level 100 (3000m) volcanic ash em move southwest centered apprx 30nm southwest of summit. Nwp models forecast little change in wind direction through t+12. Tuggle.

Original Message :

Volcanic Ash Advisory issued on 2021-04-18 at 21:48 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash emission.
  • New volcanic ash emission observation in satellite and repeted by meteorological watch office. Light volcanic ash move w at flight level 70 (2100m) new volcanic ash emission move southwest at flight level 150 (4500m) based on nwp model. Tuggle.

Original Message :

Volcanic Ash Advisory issued on 2021-04-17 at 21:22 UTC.

    Key information extracted from original VAA message :


  • Remnant volcanic ash has dispd.
  • Corr for observation. Volcanic ash not obsd in satellite imagery either attached or remnant. No pireps sent from piarco meteorological watch office report volcanic ash. No volcanic ash reports have been.

Original Message :

Volcanic Ash Advisory issued on 2021-04-17 at 15:35 UTC.

    Key information extracted from original VAA message :


  • Remnant volcanic ash.
  • Mostly gases and perhaps some volcanic ash remains suspended in the highlighted area. This correlates well with recent new explosive emission may occur without warning. Lee.

Original Message :

Volcanic Ash Advisory issued on 2021-04-17 at 11:40 UTC.

    Key information extracted from original VAA message :


  • Remnant volcanic ash.
  • Faint signal of remnant volcanic ash noted in infrared satellite imagery. This area should disperse as it drifts south over next 6 hours. Explosive emission may occur without warning. Lee.

Original Message :

Volcanic Ash Advisory issued on 2021-04-17 at 05:51 UTC.

    Key information extracted from original VAA message :


  • No current eruption. Volcanic ash plume from earlier eruption.
  • Large thin detached volcanic ash plume detected on satellite over northeastern caribbean moving w. Plume should dissipate in next 6 hour. New volcanic ash emission possible at any. Konon.

Original Message :

Volcanic Ash Advisory issued on 2021-04-17 at 00:03 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission observation in satellite imagery.
  • Hgh level weakening remnant volcanic ash emission at flight level 170 (5100m) observation 150 nmi nw from summit exp disp by t+12. Level persistent volcanic ash emission observation at 150 moving w from summit. Volcanic ash hgt/dir from prev vaa and satellite. Nwp models shows continue w-ly movement with level emission through t+18. Sambucci.

Original Message :

Volcanic Ash Advisory issued on 2021-04-16 at 20:15 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission continue observation in satellite imagery.
  • Corrected for vag. Hgh level remant volcanic ash emission observation north east from summit exp disp by t+6. Level volcanic ash emission observation at flight level 150 (4500m) moving w and flight level 170 (5100m) moving nnw from summit. Volcanic ash height from nwp volcanic ash direction from ash3d. Nwp models shows continue w-ly and nnw-ly movement through t+12 and t+18. Sambucci // end part 01 //.

Original Message :

Volcanic Ash Advisory issued on 2021-04-16 at 15:24 UTC.

    Key information extracted from original VAA message :


  • Continuous volcanic ash emission with remnant volcanic ash.

Original Message :

Volcanic Ash Advisory issued on 2021-04-16 at 12:44 UTC.

    Key information extracted from original VAA message :


  • New eruption around 10:00 UTC.
  • New eruption obsd by satellite between 10:00 UTC and 10:10 UTC volcanic ash extends over 40 nmi nw and about 20 nmi ene // end part 01 //.

Original Message :

Volcanic Ash Advisory issued on 2021-04-16 at 08:05 UTC.

    Key information extracted from original VAA message :


  • Light volcanic ash emission continue.
  • Thin narrow volcanic ash plume detected on satellite moving w of summit. Hotpot seen on swir. Little change in dir/spd of winds next 6 hour. Konon.

Original Message :

Volcanic Ash Advisory issued on 2021-04-16 at 02:16 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash emission.
  • Volcanic ash detected on satellite moving w of summit. Winds forecast to veer slightly next 6 hour. Volcanic ash plume from earlier emission has dissipated. Konon.

Original Message :

Volcanic Ash Advisory issued on 2021-04-15 at 21:26 UTC.

    Key information extracted from original VAA message :


  • Remnant volcanic ash from earlier eruption.
  • Light remnant volcanic ash from earlier eruption extending to roughly 150nm nnw of summit and moving nnw. Nwp forecast winds to remain slow and move nw at flight level 130 (3900m) through t+12 before volcanic ash likely from nwp. Mlevine.

Original Message :

Volcanic Ash Advisory issued on 2021-04-15 at 15:38 UTC.

    Key information extracted from original VAA message :


  • Intermittent volcanic ash emission.
  • Volcanic ash emission noted at 11:14 UTC and 13:33 UTC since prev advisory. All volcanic ash moving nnw. Estd from nwp nwp models forecast further volcanic ash emission to move nw by t+12 and wnw by t+18 with present volcanic ash forecast to move north then nne over dominica before dispg. Hosley.

Original Message :

Volcanic Ash Advisory issued on 2021-04-15 at 09:44 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash emission approximate 08:85 UTC.
  • Narrow dense volcanic ash plume detected on satellite moving nnw of summit. Confirmed by ttzp meteorological watch office. Nwp model winds no change forecast next 6 hour. Detacted plume about 1000 nm to e over tropopause atlantic has dissipated. Konon.

Original Message :

Volcanic Ash Advisory issued on 2021-04-15 at 04:17 UTC.

    Key information extracted from original VAA message :


  • No current volcanic ash emission. Remnant volcanic ash.
  • No current volcanic ash emission detected. Hotspot remains on swir. Large thin volcanic ash area 800 to 1110 nm e of summit from earlier moving e. Plume should dissipate in next 6 hour. Konon.

Original Message :

Volcanic Ash Advisory issued on 2021-04-14 at 22:24 UTC.

    Key information extracted from original VAA message :


  • Remnant volcanic ash from earlier explosion.
  • Possibly ongoing volcanic ash emission at flight level 120 (3600m) moving north to nnw through t+12. Remnant volcanic ash at flight level 350 (10500m) moving e through t+18. // end part 01 //.

Original Message :

Volcanic Ash Advisory issued on 2021-04-14 at 17:44 UTC.

    Key information extracted from original VAA message :


  • New explosive eruption.
  • Eruption started at 15:30 UTC volcanic ash obsd to 75 nmi e of summit approaching barbados. Nwp models forecast little change in volcanic ash movement through t+18. Remnant volcanic ash from prev advisory likely to disp by t+6. Hosley // end part 01 //.

Original Message :

Volcanic Ash Advisory issued on 2021-04-14 at 13:58 UTC.

    Key information extracted from original VAA message :


  • Remnant volcanic ash obsd.
  • Volcanic ash from 14 0230 UTC eruption obsd about 300 nmi e of summit. No volcanic ash em obsd since 14/0230z. Other volcanic ash has disp. Further activity is possible. Hosley.

Original Message :

Volcanic Ash Advisory issued on 2021-04-14 at 08:00 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash to flight level 400 (12000m) continue move quickly e from summit.
  • Volcanic ash to flight level 400 (12000m) now move e ext 200 nm from and detached from summit. Remnant volcanic ash to flight level 350 (10500m) up to 800 nm ese of summit. Volcanic ash to flight level 110 (3300m) move slowly north 30 nm up to 30 nm from summit. Flight level 400 (12000m) winds exp to increase by t+12 with little change exp at other s. Clark // end part 01 //.

Original Message :

Volcanic Ash Advisory issued on 2021-04-14 at 03:56 UTC.

    Key information extracted from original VAA message :


  • New eruption to flight level 400 (12000m) 14 0240 UTC.
  • Remnant volcanic ash to flight level 350 (10500m) continue move e up to 700 nm from summit. New eruption estd to flight level 400 (12000m) move e to 65 // end part 01 //.

Original Message :

Volcanic Ash Advisory issued on 2021-04-14 at 02:58 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash em to flight level 110 (3300m) 14 0100 UTC.
  • Remnant volcanic ash continue move ese to flight level 350 (10500m) new volcanic ash em.

Original Message :

Volcanic Ash Advisory issued on 2021-04-13 at 23:16 UTC.

    Key information extracted from original VAA message :


  • Remnant volcanic ash emission observation in satellite imagery.
  • New volcanic ash emission possible with summit hotspot observation. Remnant volcanic ash emission from earlier 11:10 UTC eruption observation in satellite approx 600nm se from summit. Volcanic ash hgt/dir from prev vaa, stlt/nwp models shows continue se-ly movement through t+18. Sambucci.

Original Message :

Volcanic Ash Advisory issued on 2021-04-13 at 19:28 UTC.

    Key information extracted from original VAA message :


  • Volcanic ash emission continue observation in satellite imagery.
  • New low level volcanic ash emission observation moving nw from summit exp continue nw-ly movement through t+6. Remant high level volcanic ash emission from earlier 11:10 UTC eruption observation 450nm ese from summit. Volcanic ash hgt/dir from nwp mlds shows ese-ly to e-ly movement trend through t+18. Sambucci.

Original Message :

Volcanic Ash Advisory issued on 2021-04-13 at 16:45 UTC.

    Key information extracted from original VAA message :


  • Remnant volcanic ash observation.
  • Regard remnant volcanic ash observation in satellite move primarily e and se of summit and fanning. Light volcanic ash at lower.

Original Message :

Volcanic Ash Advisory issued on 2021-04-13 at 12:28 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash emission observation.
  • New heavy volcanic ash emission observation in satellite move ese of summit quickly in high based on volcanic ash mvmt, nwp model gdnc winds and recent activity. Volcanic ash expected to continue and move ese of summit prior to turning ene and accel. Large area of remnant volcanic ash observation to se of new emission. Jlevine.

Original Message :

Volcanic Ash Advisory issued on 2021-04-13 at 06:49 UTC.

    Key information extracted from original VAA message :


    Aviation Colour Code :  


  • Eruption at 2021-04-09 19:00 UTC widespread remnant volcanic ash.
  • Please see fvxx25 knes 130033z issued by volcanic ash advisory center washington which describes conditions over or near the volcanic ash advisory center toulouse area of responsibility. All products are available at [lower case] https://www. Ssd. Noaa. Gov/vaac/messages. Html.

Original Message :

Volcanic Ash Advisory issued on 2021-04-13 at 06:23 UTC.

    Key information extracted from original VAA message :


  • Widespread remnant volcanic ash.
  • Remnant volcanic ash observation up to 1000 nm e of summit. Volcanic ash forecast to move ese to se through forecast period. Volcanic ash becoming more diffuse and broken. Clark.

Original Message :

Volcanic Ash Advisory issued on 2021-04-13 at 01:20 UTC.

    Key information extracted from original VAA message :


    Aviation Colour Code :  


  • Eruption at 2021-04-09 19:00 UTC remnant volcanic ash aloft.
  • Please see fvxx25 knes 130033z issued by volcanic ash advisory center washington which describes conditions over or near the volcanic ash advisory center toulouse area of responsibility. All products are available at [lower case] https://www. Ssd. Noaa. Gov/vaac/messages. Html.

Original Message :

Volcanic Ash Advisory issued on 2021-04-13 at 00:33 UTC.

    Key information extracted from original VAA message :


  • Remnant volcanic ash aloft.
  • Remnant volcanic ash forecast to continue moving e to se extending to about 1050nm ese of summit before becoming too diffuse to.

Original Message :

Volcanic Ash Advisory issued on 2021-04-12 at 21:56 UTC.

    Key information extracted from original VAA message :


    Aviation Colour Code :  


  • Eruption at 2021-04-09 19:00 UTC continue volcanic ash aloft.
  • Please see fvxx25 knes 122052z issued by volcanic ash advisory center washington which describes conditions over or near the volcanic ash advisory center toulouse area of responsibility. All products are available at [lower case] https://www. Ssd. Noaa. Gov/vaac/messages. Html.

Original Message :

Volcanic Ash Advisory issued on 2021-04-12 at 20:52 UTC.

    Key information extracted from original VAA message :


  • Continue volcanic ash aloft.
  • Possible light emission from summit and remnant volcanic ash from earlier explosions observation on satellite. Remnant volcanic ash extending to possibly 1050nm se of summit before becoming very. Mlevine.

Original Message :

Volcanic Ash Advisory issued on 2021-04-12 at 20:30 UTC.

    Key information extracted from original VAA message :


    Aviation Colour Code :  


  • Eruption at 2021-04-09 19:00 UTC continue volcanic ash aloft from 12/0820 emission.
  • Please see fvxx25 knes 121804z issued by volcanic ash advisory center washington which describes conditions over or near the volcanic ash advisory center toulouse area of responsibility. All products are available at [lower case] https://www. Ssd. Noaa. Gov/vaac/messages. Html.

Original Message :

Volcanic Ash Advisory issued on 2021-04-12 at 18:04 UTC.

    Key information extracted from original VAA message :


  • Continue volcanic ash aloft from 12/0820 emission.
  • Continue volcanic ash aloft observation in satellite imagery move e/ese extend approx 260 nm from summit. Volcanic ash signature remains strong in rgb with diffuse nwp models suggest continue move e/ese through t+18hrs. Fisher.

Original Message :

Volcanic Ash Advisory issued on 2021-04-12 at 15:49 UTC.

    Key information extracted from original VAA message :


    Aviation Colour Code :  


  • Eruption at 2021-04-09 19:00 UTC volcano activity still ongoing.
  • Please see fvxx25 knes 121501z issued by volcanic ash advisory center washington which describes conditions over or near the volcanic ash advisory center toulouse area of responsibility. All products are available at [lower case] https://www. Ssd. Noaa. Gov/vaac/messages. Html.

Original Message :

Volcanic Ash Advisory issued on 2021-04-12 at 14:54 UTC.

    Key information extracted from original VAA message :


  • Continue volcano activity with volcanic ash aloft.
  • Continue volcano activity with volcanic ash aloft move e/ese of summit at flight level 400 (12000m) extg aprox 230nm. Volcanic ash signature is strong in rgb img with diffuse nwp models forecast continue e/se mvmnt through t+18. Volcano activity high. Fisher.

Original Message :

Volcanic Ash Advisory issued on 2021-04-12 at 10:04 UTC.

    Key information extracted from original VAA message :


    Aviation Colour Code :  


  • Eruption at 2021-04-09 19:00 UTC volcanic ash em observation 08z top of clouds flight level 420 (12600m) move ese.
  • Please see fvxx25 knes 120934z issued by volcanic ash advisory center washington which describes conditions over or near the volcanic ash advisory center toulouse area of responsibility. All products are available at [lower case] https://www. Ssd. Noaa. Gov/vaac/messages. Html.

Original Message :

Volcanic Ash Advisory issued on 2021-04-12 at 09:34 UTC.

    Key information extracted from original VAA message :


  • New volcanic ash em to flight level 420 (12600m) move ese.
  • Summit area obscured by weather clouds but volcanic ash observation move wsw from summit just prior to in past 2 hours.

Original Message :

Volcanic Ash Advisory issued on 2021-04-12 at 04:51 UTC.

    Key information extracted from original VAA message :


    Aviation Colour Code :  


  • Eruption at 2021-04-09 19:00 UTC continuing explosive emission.
  • Please see fvxx25 knes 120430 issued by volcanic ash advisory center washington which describes conditions over or near the volcanic ash advisory center toulouse area of responsibility. All products are available at [lower case] https://www. Ssd. Noaa. Gov/vaac/messages. Html.

Original Message :

Volcanic Ash Advisory issued on 2021-04-12 at 04:30 UTC.

    Key information extracted from original VAA message :


  • Continuing explosive emission.
  • Volcanic ash emission noted in infrared satellite imagery. Volcanic ash move in a general w direction. Web cam inop. Lee.

Original Message :

Volcanic Ash Advisory issued on 2021-04-11 at 23:25 UTC.

    Key information extracted from original VAA message :


    Aviation Colour Code :  


  • Eruption at 2021-04-09 19:00 UTC ongoing explosive emission.
  • Please see fvxx25 knes 112250 issued by volcanic ash advisory center washington which describes conditions over or near the volcanic ash advisory center toulouse area of responsibility. All products are available at [lower case] https://www. Ssd. Noaa. Gov/vaac/messages. Html.

Original Message :

Volcanic Ash Advisory issued on 2021-04-11 at 22:50 UTC.

    Key information extracted from original VAA message :


  • Ongoing explosive emission.
  • Intermittent large emission continue. Furthermost volcanic ash signal extends to 2400 nm e from summit associated with initial em and mostly heavier volcanic ash concentration further w as one nears source region. Lee.

Original Message :

Volcanic Ash Advisory issued on 2021-04-11 at 18:20 UTC.

    Key information extracted from original VAA message :


    Aviation Colour Code :  


  • Eruption at 2021-04-09 19:00 UTC frequent explosive eruptions.
  • Please see fvxx25 knes 111753 issued by volcanic ash advisory center washington which describes conditions over or near the volcanic ash advisory center toulouse area of responsibility. All products are available at [lower cases] https://www. Ssd. Noaa. Gov/vaac/messages. Html.

Original Message :

Volcanic Ash Advisory issued on 2021-04-11 at 17:53 UTC.

    Key information extracted from original VAA message :


  • Ongoing explosive emission.
  • Very large periodic emission continue. Emission lofted to perhaps flight level 520 (15600m) and carried ene through ese to around 2000 nm e of summit. Volcanic ash becomes more diffuse further e vaag area. Vaag assumes continue //end part 01//.

Original Message :

Volcanic Ash Advisory issued on 2021-04-11 at 12:55 UTC.

    Key information extracted from original VAA message :


    Aviation Colour Code :  


  • Eruption at 2021-04-09 19:00 UTC frequent explosive eruptions.
  • Please see fvxx25 knes 111230 issued by volcanic ash advisory center washington which describes conditions over or near the volcanic ash advisory center toulouse area of responsibility. All products are available at [lower cases] https://www. Ssd. Noaa. Gov/vaac/messages. Html.

Original Message :

Volcanic Ash Advisory issued on 2021-04-11 at 12:30 UTC.

    Key information extracted from original VAA message :


  • Frequent explosive eruptions.
  • Several explosive eruptions over the past 6 hours. Volcanic ash becoming diffuse at about 1200nm from summit. Lower winds have more northern component while higher winds have more southern component. Forecast and from hysplit and nwp. Mlevine.

Original Message :

Volcanic Ash Advisory issued on 2021-04-11 at 07:22 UTC.

    Key information extracted from original VAA message :


    Aviation Colour Code :  


  • Eruption at 2021-04-09 19:00 UTC frqt explosive eruptions.
  • Please see fvxx25 knes 110658 issued by volcanic ash advisory center washington which describes conditions over or near the volcanic ash advisory center toulouse area of responsibility. All products are available at [lower cases] https://www. Ssd. Noaa. Gov/vaac/messages. Html.

Original Message :

Volcanic Ash Advisory issued on 2021-04-11 at 06:58 UTC.

    Key information extracted from original VAA message :


  • Frqt explosive eruptions.
  • Numerous explosive eruptions seen over the // end part 01 //.

Original Message :

Volcanic Ash Advisory issued on 2021-04-11 at 01:58 UTC.

    Key information extracted from original VAA message :


    Aviation Colour Code :  


  • Eruption at 2021-04-09 19:00 UTC volcanic ash advisory center washington.
  • Amendment please see fvxx25 knes 110059 issued by volcanic ash advisory center washington which describes conditions over or near the volcanic ash advisory center toulouse area of responsability. All product are available : https://www. Ssd. Noaa. Gov/vaac/messages. Html#souf.

Original Message :

Volcanic Ash Advisory issued on 2021-04-11 at 01:35 UTC.

    Key information extracted from original VAA message :


    Aviation Colour Code :  


  • Eruption at 2021-04-09 19:00 UTC volcanic ash advisory center washington.
  • Please see fvxx25 knes 110059 issued by volcanic ash advisory center washington which describes conditions over or near the volcanic ash advisory center toulouse area of responsability. All product are available : https://www. Ssd. Noaa. Gov/vaac/messages. Html#souf.

Original Message :

Volcanic Ash Advisory issued on 2021-04-11 at 00:59 UTC.

    Key information extracted from original VAA message :


  • Ongoing explosive emission.
  • Web cam shows volcanic ash emission fumigating around summit and just to south under light nothing seen in satellite imagery due to weather wind conditions forecast to light. Lee.

Original Message :

Volcanic Ash Advisory issued on 2021-04-10 at 20:55 UTC.

    Key information extracted from original VAA message :


    Aviation Colour Code :  


  • Eruption at 2021-04-09 19:00 UTC volcanic ash advisory center washington.
  • Please see fvxx25 knes 101957 issued by volcanic ash advisory center washington which describes conditions over or near the volcanic ash advisory center toulouse area of responsability. All product are available : https://www. Ssd. Noaa. Gov/vaac/messages. Html#souf.

Original Message :

Volcanic Ash Advisory issued on 2021-04-10 at 19:57 UTC.

    Key information extracted from original VAA message :


  • Ongoing explosive emission.
  • Volcanic ash from earlier emission dispersed. No new emission noted in mostly clear skies in satellite imagery. Some steam and gases noted in web cam. No new reports. Lee.

Original Message :

Volcanic Ash Advisory issued on 2021-04-10 at 15:55 UTC.

    Key information extracted from original VAA message :


  • Continuing explosive eruption.
  • Volcanic ash reaching over 1000nm ene of summit. Main plume at flight level 350 (10500m) with highest tops at flight level 500 (15000m) moving ese with residual volcanic ash reaching 650nm. And winds from hysplit and nwp. Mlevine.

Original Message :

Volcanic Ash Advisory issued on 2021-04-10 at 11:13 UTC.

    Key information extracted from original VAA message :


  • Continuing explosive eruption.
  • Volcanic ash reaching over 700 nmi ene from summit. Main plume at flight level 470 (14100m) moving ene with the highest tops to flight level 520 (15600m) moving ese. Ashfall north and north east of summit seen // end part 01 //.

Original Message :

Volcanic Ash Advisory issued on 2021-04-10 at 05:43 UTC.

    Key information extracted from original VAA message :


  • Continuing major eruption.
  • Volcanic ash extends nearly 400 nmi ene from summit and about 350 nmi ese from summit. Nwp models and se volcanic ash movement suggest volcanic ash to higher than prev advisory. Forecast based on nwp mdls, hysplit and ash3d. Hosley.

Original Message :

Volcanic Ash Advisory issued on 2021-04-09 at 23:46 UTC.

    Key information extracted from original VAA message :


  • Continue explosive eruption.
  • Ongoing violent volcanic ash emission due to multiple explosive eruptions. Multiple t near summit to tropopause. Elsewhere se to flight level 220 (6600m) and further e to flight level 420 (12600m) vaa updated accordingly to reflect ongoing event. Lee.

Original Message :

Volcanic Ash Advisory issued on 2021-04-09 at 21:08 UTC.

    Key information extracted from original VAA message :


  • New explosive em plus remnant volcanic ash.
  • New em showing cloud top of clouds temps at minus 78c, which conveys height of 52kft. Numerous lightning strikes in volc cb. Volcanic ash move off to e. Remnant volcanic ash from earlier emission dispersing w/i 6 hours. Lee.

Original Message :

Volcanic Ash Advisory issued on 2021-04-09 at 18:11 UTC.

    Key information extracted from original VAA message :


  • Possible ongoing em. Remnant volcanic ash.
  • Dense high weather clouds have obstructed view of summit but ongoing emission likely. Remnant volcanic ash move wnw to flight level 110 (3300m) and e to ene of summit to flight level 400 (12000m) vaa will likely be updated freq to account for change in activity and volcanic ash move. Lee.

Original Message :

Volcanic Ash Advisory issued on 2021-04-09 at 15:38 UTC.

    Key information extracted from original VAA message :


  • Ongoing eruption.
  • Updated to lower and account for se moving volcanic ash. Ongoing explosive eruption observation from uwi seismic research centre and satellite data. Volcanic ash spreading w to over 15nm and e to over 130nm. Lower level volcanic ash forecast to spread generally w while upper level volcanic ash forecast to spread e through t+18. And winds from hysplit. Mlevine.

Original Message :

Volcanic Ash Advisory issued on 2021-04-09 at 14:33 UTC.

    Key information extracted from original VAA message :


  • Ongoing eruption.
  • Ongoing explosive eruption observation from uwi seismic research centre and satellite data. Volcanic ash spreading w to over 10nm and e to over 50nm. Lower level volcanic ash forecast to spread e and w while upper level volcanic ash forecast to spread e through t+18. And winds from hysplit. Mlevine.

Original Message :

Volcanic Ash Advisory issued on 2021-04-09 at 12:58 UTC.

    Key information extracted from original VAA message :


  • Poss volcanic ash exhalation 09 1230 UTC.
  • We have received information suggesting a possible volcanic ash emission. We will gather further information and issue a full advisory as soon as possible.

Original Message :

Volcanic Ash Advisory issued on 2021-04-09 at 01:27 UTC.

    Key information extracted from original VAA message :


  • No volcanic ash emission observation in satellite.
  • Volcano alert level has been raised from orange to red. Steam and gas emission have increased in the last observation before a break in coverage at a manual station 24 hours. No volcanic ash seen in satellite imagery or reported to volcanic ash advisory center. Well defined hotspot seen in s/w. We will continue to closely monitor and advise as needed. Kibler.

Original Message :