FVXX24 KNES 190403
VA ADVISORY
DTG: 20210419/0403Z

VAAC: WASHINGTON

VOLCANO: SOUFRIERE ST VINCENT 360150
PSN: N1319 W06110

AREA: W_INDIES

SUMMIT ELEV: 3865 FT (1178 M)

ADVISORY NR: 2021/051

INFO SOURCE: GOES-16. NWP MODELS. RADIOSONDE. 

ERUPTION DETAILS: NO CURRENT ERUPTION. DETACHED
VA PLUMES.

OBS VA DTG: 19/0320Z

OBS VA CLD: SFC/FL100 N1325 W06441 - N1321 W06241
- N1244 W06244 - N1234 W06356 - N1306 W06444 -
N1325 W06441 MOV W 15KT SFC/FL230 N1228 W06205 -
N1159 W06135 - N1145 W06205 - N1210 W06236 -
N1228 W06205 MOV SW 15KT 

FCST VA CLD +6HR: 19/0930Z SFC/FL100 N1337 W06647
- N1326 W06434 - N1244 W06441 - N1244 W06659 -
N1337 W06647 SFC/FL230 N1125 W06253 - N1048
W06220 - N1024 W06301 - N1102 W06326 - N1125
W06253 

FCST VA CLD +12HR: 19/1530Z SFC/FL100 N1339
W06907 - N1334 W06644 - N1244 W06656 - N1250
W06911 - N1339 W06907 SFC/FL230 NO VA EXP

FCST VA CLD +18HR: 19/2130Z SFC/FL100 NO VA
EXPSFC/FL230 NO VA EXP

RMK: VAA UPDATED EARLY DUE TO VA MVMNT. NO
CURRENT VA EMS DETECTED BUT TWO VA PLUMES LIKELY
TO MOV FURTHER THAN EARLIER FCST. VA TO FL100 TO
MOVG W AND FL230 MOVG SW. NEW VA PSBL AT ANY
TIME. ...KONON

NXT ADVISORY: WILL BE ISSUED BY 20210419/1000Z