FVXX20 KNES 040927
VA ADVISORY
DTG: 20210204/0927Z

VAAC: WASHINGTON

VOLCANO: SANGAY 352090
PSN: S0200 W07820

AREA: ECUADOR

SUMMIT ELEV: 17159 FT (5230 M)

ADVISORY NR: 2021/139

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

ERUPTION DETAILS: CONTG CONS VA EMS.

OBS VA DTG: 04/0900Z

OBS VA CLD: SFC/FL230 S0159 W07820 - S0200 W07819
- S0200 W07819 - S0232 W07819 - S0207 W07853 -
S0159 W07820 MOV SW 10KT 

FCST VA CLD +6HR: 04/1500Z SFC/FL230 S0159 W07820
- S0201 W07819 - S0239 W07842 - S0212 W07906 -
S0159 W07820 

FCST VA CLD +12HR: 04/2100Z SFC/FL230 S0159
W07820 - S0200 W07819 - S0241 W07843 - S0217
W07905 - S0159 W07820 

FCST VA CLD +18HR: 05/0300Z SFC/FL230 S0159
W07819 - S0201 W07818 - S0244 W07841 - S0223
W07901 - S0159 W07819 

RMK: CONS VA OBS FANNING OUT W TO S BELOW FL230
AND REACHING AT LEAST 30 NM FM SUMMIT. OBS VA FL
BASED ON NWP MDLS WITH LWR CONFID DUE TO SPREAD
AND AMBIGUOUS VOLCAT ALERT. CONTD SW-LY MVMT EXP
THRU T+18 HRS. ...CLARK

NXT ADVISORY: WILL BE ISSUED BY 20210204/1530Z