FVXX25 KNES 111230
VA ADVISORY
DTG: 20210411/1230Z

VAAC: WASHINGTON

VOLCANO: SOUFRIERE ST VINCENT 360150
PSN: N1319 W06110

AREA: W_INDIES

SUMMIT ELEV: 3865 FT (1178 M)

ADVISORY NR: 2021/014

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

ERUPTION DETAILS: FRQ EXPLOSIVE ERUPTIONS

OBS VA DTG: 11/1140Z

OBS VA CLD: SFC/FL400 N1814 W02815 - N1007 W02923
- N1349 W06118 - N1628 W05334 - N1814 W02815 MOV
SE 30KT SFC/FL520 N1352 W06110 - N1109 W03908 -
N0656 W04022 - N1314 W06113 - N1352 W06110 MOV SE
25KT 

FCST VA CLD +6HR: 11/1730Z SFC/FL400 N1840 W02658
- N0926 W02735 - N1352 W06113 - N1623 W05641 -
N1840 W02658 SFC/FL520 N1346 W06113 - N1041
W03525 - N0556 W03753 - N0958 W05608 - N1306
W06115 - N1346 W06113 

FCST VA CLD +12HR: 11/2330Z SFC/FL400 N1831
W02616 - N0913 W02532 - N1332 W06110 - N1643
W05431 - N1831 W02616 SFC/FL520 N1303 W06113 -
N1032 W03317 - N0425 W03708 - N0838 W05804 -
N1303 W06113 

FCST VA CLD +18HR: 12/0530Z SFC/FL400 N1831
W02604 - N0855 W02453 - N1340 W06115 - N1648
W05408 - N1831 W02604 SFC/FL520 N1303 W06115 -
N1023 W03103 - N0308 W03446 - N0801 W05738 -
N1303 W06115 

RMK: SVRL EXPLOSIVE ERUPTIONS OVR THE PAST 6 HRS.
VA BECOMING DIFFUSE AT ABT 1200NM FM SUMMIT. LWR
FL WINDS HAVE MORE NRN COMPONENT WHILE HIER FL
WINDS HAVE MORE SRN COMPONENT. FCST AND FL FM
HYSPLIT AND NWP ...MLEVINE

NXT ADVISORY: WILL BE ISSUED BY 20210411/1830Z
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