FVXX25 KNES 091811
VA ADVISORY
DTG: 20210409/1811Z

VAAC: WASHINGTON

VOLCANO: SOUFRIERE ST VINCENT 360150
PSN: N1319 W06110

AREA: W_INDIES

SUMMIT ELEV: 3865 FT (1178 M)

ADVISORY NR: 2021/005

INFO SOURCE: GOES-16. NWP MODELS. HYSPLIT. ASH3D.
VOLCAT. UWI SEISMIC RESEARCH CENTRE. SOCIAL
MEDIA. MLDP

ERUPTION DETAILS: POSSIBLE ONGOING EM. REMNANT VA.

OBS VA DTG: 09/1740Z

OBS VA CLD: SFC/FL110 N1347 W06126 - N1330 W06104
- N1314 W06113 - N1322 W06140 - N1347 W06126 MOV
NW 5KT SFC/FL400 N1452 W05740 - N1355 W05707 -
N1302 W06032 - N1308 W06102 - N1328 W06100 -
N1332 W06055 - N1452 W05740 MOV E 35KT 

FCST VA CLD +6HR: 09/2330Z SFC/FL400 N1526 W05347 
- N1338 W05316 - N1253 W05858 - N1350 W05912 - 
N1401 W05846 - N1526 W05347 

FCST VA CLD +12HR: 10/0530Z SFC/FL400
N1625 W05007 - N1335 W04943 - N1305 W05610 -
N1433 W05610 - N1510 W05607 - N1625 W05007 

FCST VA CLD +18HR: 10/1130Z SFC/FL400
N1647 W04716 - N1313 W04626 - N1314 W05201 -
N1529 W05214 - N1617 W05204 - N1647 W04716 

RMK: DENSE HIGH WX CLDS HAVE OBSTRUCTED VIEW OF
SUMMIT BUT ONGOING EMS LIKELY. REMNANT VA MOV WNW
TO FL110 AND E TO ENE OF SUMMIT TO FL400. VAA 
WILL LIKELY BE UPDATED FREQ TO ACCOUNT FOR CHANGE
IN ACT AND VA MOV. ...LEE

NXT ADVISORY: WILL BE ISSUED BY 20210410/0015Z
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