FVXX25 KNES 121804
VA ADVISORY
DTG: 20210412/1804Z

VAAC: WASHINGTON

VOLCANO: SOUFRIERE ST VINCENT 360150
PSN: N1319 W06110

AREA: W_INDIES

SUMMIT ELEV: 3865 FT (1178 M)

ADVISORY NR: 2021/020

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

ERUPTION DETAILS: CONT VA ALOFT FM 12/0820 EMS

OBS VA DTG: 12/1740Z

OBS VA CLD: SFC/FL400 N1405 W05547 - N1245 W05128
- N1024 W05145 - N0810 W05413 - N0857 W05727 -
N1020 W05901 - N1258 W06025 - N1405 W05547 MOV SE
30KT 

FCST VA CLD +6HR: 12/2330Z SFC/FL400 N1322 W05235
- N1235 W04851 - N0847 W04807 - N0723 W05152 -
N0822 W05637 - N1121 W05754 - N1305 W05620 -
N1322 W05235 

FCST VA CLD +12HR: 13/0530Z SFC/FL400 N1345
W04520 - N1151 W04252 - N0720 W04159 - N0549
W04506 - N0619 W05259 - N1111 W05433 - N1342
W05018 - N1345 W04520 

FCST VA CLD +18HR: 13/1130Z SFC/FL400 N1449
W04446 - N1352 W04149 - N1041 W04028 - N0646
W04031 - N0529 W04440 - N0633 W05005 - N1034
W05159 - N1446 W04847 - N1449 W04446 

RMK: CONT VA ALOFT OBS IN STLT IMAGERY MOV E/ESE
EXTD APPROX 260 NM FM SUMMIT. VA SIG REMAINS
STRONG IN RGB WITH DIFFUSE EDGES. NWP MDLS
SUGGEST CONT MOV E/ESE THRU T+18HRS.   ...FISHER

NXT ADVISORY: WILL BE ISSUED BY 20210413/0000Z