FVXX22 KNES 211840
VA ADVISORY
DTG: 20230421/1840Z

VAAC: WASHINGTON

VOLCANO: SANGAY 352090
PSN: S0200 W07820

AREA: ECUADOR

SUMMIT ELEV: 17342 FT (5286 M)

ADVISORY NR: 2023/335

INFO SOURCE: GOES-16. NWP MODELS. 

ERUPTION DETAILS: VA EMS OBS

OBS VA DTG: 21/1810Z

OBS VA CLD: SFC/FL330 S0151 W07914 - S0157 W07826
- S0203 W07825 - S0216 W07914 - S0151 W07914 MOV
W 10KT 

FCST VA CLD +6HR: 22/0000Z SFC/FL330 S0155 W07933
- S0159 W07819 - S0202 W07819 - S0225 W07929 -
S0155 W07933 

FCST VA CLD +12HR: 22/0600Z SFC/FL330 S0155
W07933 - S0159 W07819 - S0202 W07819 - S0225
W07930 - S0155 W07933 

FCST VA CLD +18HR: 22/1200Z SFC/FL330 S0159
W07819 - S0201 W07819 - S0250 W07915 - S0221
W07931 - S0159 W07819 

RMK: LARGE VA EMS OBS IN STLT IMG MOV W AND EXT
AT LEAST 50 NMI FM SUMMIT. OCNL VA EMS MAY CONT.
MVMT EXP TO SHIFT SW BY T+18. FL AND MVMT BASED
ON STLT AND NWP MODELS. ...GATLING

NXT ADVISORY: WILL BE ISSUED BY 20230422/0045Z