FVXX25 KNES 170003
VA ADVISORY
DTG: 20210417/0003Z

VAAC: WASHINGTON

VOLCANO: SOUFRIERE ST VINCENT 360150
PSN: N1319 W06110

AREA: W_INDIES

SUMMIT ELEV: 3865 FT (1178 M)

ADVISORY NR: 2021/043

INFO SOURCE: GOES-16. PIARCO MWO. NWP MODELS.
ASH3D. VOLCAT. 

ERUPTION DETAILS: VA EMS OBS IN STLT IMAGERY

OBS VA DTG: 16/2320Z

OBS VA CLD: SFC/FL150 N1358 W06352 - N1328 W06111
- N1311 W06112 - N1320 W06352 - N1358 W06352 MOV
W 10KT SFC/FL170 N1658 W06313 - N1627 W06220 -
N1350 W06124 - N1342 W06344 - N1658 W06313 MOV N
10KT 

FCST VA CLD +6HR: 17/0530Z SFC/FL150 N1407 W06401
- N1330 W06108 - N1308 W06108 - N1314 W06409 -
N1407 W06401 SFC/FL170 N1726 W06405 - N1714
W06302 - N1357 W06338 - N1406 W06432 - N1726
W06405 

FCST VA CLD +12HR: 17/1130Z SFC/FL150 N1413
W06419 - N1331 W06108 - N1308 W06110 - N1311
W06423 - N1413 W06419 SFC/FL170 NO VA EXP

FCST VA CLD +18HR: 17/1730Z SFC/FL150 N1417
W06416 - N1331 W06107 - N1314 W06107 - N1313
W06420 - N1417 W06416 

RMK: HGH LVL REMNANT VA EMS AT FL170 OBS 150 NMI
NW FM SUMMIT EXP DISP BY T+12. LVL VA EMS OBS AT
FL 150 MOVG W FM SUMMIT. VA HGT/DIR FM PREV VAA
AND STLT. NWP MDLS SHOWS CONT W-LY MOVMT WITH LVL
EMS THRU T+18. ...SAMBUCCI

NXT ADVISORY: WILL BE ISSUED BY 20210417/0600Z