FVXX25 KNES 161524
VA ADVISORY
DTG: 20210416/1524Z

VAAC: WASHINGTON

VOLCANO: SOUFRIERE ST VINCENT 360150
PSN: N1319 W06110

AREA: W_INDIES

SUMMIT ELEV: 3865 FT (1178 M)

ADVISORY NR: 2021/041

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

ERUPTION DETAILS: CONS VA EMS WITH REMNANT VA.

OBS VA DTG: 16/1500Z

OBS VA CLD: SFC/FL100 N1447 W06223 - N1436 W06159
- N1340 W06149 - N1341 W06217 - N1447 W06223 MOV
NW 25KT SFC/FL120 N1334 W06149 - N1324 W06109 -
N1319 W06112 - N1324 W06152 - N1334 W06149 MOV W
20KT SFC/FL150 N1340 W06218 - N1338 W06144 -
N1320 W06114 - N1305 W06112 - N1305 W06152 -
N1340 W06218 MOV W 10KT SFC/FL180 N1343 W06033 -
N1325 W06029 - N1317 W06113 - N1325 W06119 -
N1343 W06033 MOV NE 10KT SFC/FL220 N1323 W06030 -
N1301 W06054 - N1309 W06110 - N1316 W06112 -
N1323 W06030 MOV SE 5KT 

FCST VA CLD +6HR: 16/2100Z SFC/FL100 N1610 W06345
- N1542 W06234 - N1405 W06232 - N1417 W06354 -
N1610 W06345 SFC/FL120 N1356 W06241 - N1322
W06109 - N1317 W06113 - N1333 W06247 - N1356
W06241 SFC/FL150 N1416 W06354 - N1406 W06231 -
N1311 W06157 - N1319 W06324 - N1416 W06354
SFC/FL180 NO VA EXP SFC/FL220 NO VA EXP

FCST VA CLD +12HR: 17/0300Z SFC/FL100 N1701
W06450 - N1643 W06327 - N1424 W06334 - N1454
W06507 - N1701 W06450 SFC/FL120 N1353 W06308 -
N1320 W06110 - N1315 W06110 - N1324 W06241 -
N1353 W06308 SFC/FL150 N1452 W06506 - N1423
W06334 - N1315 W06307 - N1333 W06422 - N1452
W06506 

FCST VA CLD +18HR: 17/0900Z SFC/FL100 NO VA
EXP SFC/FL120 N1359 W06308 - N1319 W06109 - N1313
W06109 - N1329 W06314 - N1359 W06308 SFC/FL150 NO
VA EXP

RMK: VA FM 1000Z ERUPTION NOW OBSD TO 100NMI NW
OF SUMMIT. VA MOVG ENE/SE DISPG QUICKLY. CONS VA
EMS OBSD MOVG WNW AT FL120. FLS ESTD FM 12Z TBPB
RADIOSONDE. ...HOSLEY

NXT ADVISORY: WILL BE ISSUED BY 20210416/2130Z
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