FVXX25 KNES 140800
VA ADVISORY
DTG: 20210414/0800Z

VAAC: WASHINGTON

VOLCANO: SOUFRIERE ST VINCENT 360150
PSN: N1319 W06110

AREA: W_INDIES

SUMMIT ELEV: 3865 FT (1178 M)

ADVISORY NR: 2021/030

INFO SOURCE: GOES-16. NWP MODELS. ASH3D. 

ERUPTION DETAILS: VA TO FL400 CONT MOV QUICKLY E
FM SUMMIT.

OBS VA DTG: 14/0740Z

OBS VA CLD: SFC/FL110 N1346 W06108 - N1320 W06107
- N1320 W06113 - N1343 W06127 - N1346 W06108 MOV
N 5KT SFC/FL350 N1406 W05529 - N1237 W04734 -
N0547 W04852 - N0732 W05642 - N1406 W05529 MOV E
25KT SFC/FL400 N1433 W05747 - N1234 W05720 -
N1227 W05932 - N1313 W06109 - N1338 W06102 -
N1423 W05910 - N1433 W05747 MOV E 45KT 

FCST VA CLD +6HR: 14/1330Z SFC/FL110 N1356 W06107
- N1320 W06107 - N1319 W06111 - N1353 W06131 -
N1356 W06107 SFC/FL350 N1343 W05354 - N1223
W04635 - N0537 W04700 - N0713 W05503 - N1343
W05354 SFC/FL400 N1431 W05903 - N1419 W05444 -
N1152 W05439 - N1307 W06110 - N1341 W06101 -
N1431 W05903 

FCST VA CLD +12HR: 14/1930Z SFC/FL110 NO VA
EXP SFC/FL350 N1328 W05222 - N1221 W04617 - N0534
W04644 - N0702 W05331 - N1328 W05222 SFC/FL400
N1405 W05323 - N1142 W05323 - N1255 W06018 -
N1401 W06018 - N1405 W05323 

FCST VA CLD +18HR: 15/0130Z SFC/FL350 N1337
W04613 - N0644 W04635 - N0646 W05202 - N1315
W05121 - N1337 W04613 SFC/FL400 N1413 W05123 -
N1125 W05131 - N1235 W05854 - N1355 W05902 -
N1413 W05123 

RMK: VA TO FL400 NOW MOV E EXT 200 NM FM AND
DETACHED FM SUMMIT. REMNANT VA TO FL350 UP TO 800
NM ESE OF SUMMIT. VA TO FL110 MOV SLOWLY N 30 NM
UP TO 30 NM FM SUMMIT. FL400 WINDS EXP TO INCR BY
T+12 WITH LTLCG EXP AT OTHER FLS. ...CLARK

NXT ADVISORY: WILL BE ISSUED BY 20210414/1400Z
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