FVXX20 KNES 161856 VA ADVISORY DTG: 20201216/1856Z VAAC: WASHINGTON VOLCANO: SANGAY 352090 PSN: S0200 W07820 AREA: ECUADOR SUMMIT ELEV: 17159 FT (5230 M) ADVISORY NR: 2020/1220 INFO SOURCE: GOES-16. NWP MODELS. VOLCAT. ERUPTION DETAILS: CONT VA EMS OBS OBS VA DTG: 16/1855Z OBS VA CLD: SFC/FL200 S0152 W07851 - S0158 W07819 - S0204 W07850 - S0152 W07851 MOV W 10KT FCST VA CLD +6HR: 17/0100Z SFC/FL200 S0151 W07852 - S0158 W07819 - S0204 W07850 - S0151 W07852 FCST VA CLD +12HR: 17/0700Z NO VA EXP FCST VA CLD +18HR: 17/1300Z NO VA EXP RMK: CONT VA EMS OBS MOV W IN STLT IMAGERY. VA EMS FCST TO CONT MOV W THRU T+6HRS BEFORE DISP. ...FISHER NXT ADVISORY: WILL BE ISSUED BY 20201217/0100Z