FVXX23 KNES 201454 VA ADVISORY DTG: 20211220/1454Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0005 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/1161 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. VOLCAT. ERUPTION DETAILS: OCNL VA CLDS OBS IN EARLIER STLT IMAGERY OBS VA DTG: 20/1430Z OBS VA CLD: SFC/FL150 S0000 W07752 - S0004 W07740 - S0006 W07740 - S0008 W07752 - S0000 W07752 MOV W 5KT FCST VA CLD +6HR: 20/2030Z SFC/FL150 S0004 W07740 - S0006 W07738 - S0015 W07752 - S0004 W07755 - S0004 W07740 FCST VA CLD +12HR: 21/0230Z NO VA EXP FCST VA CLD +18HR: 21/0830Z NO VA EXP RMK: OCNL VA CLDS OBS IN EARLIER STLT MOVG W FM SUMMIT. SUMMIT HOTSPOT OBS IN STLT. LOW CONF IN VAA DUE TO WX CLDS. VA DIR/HGT FM PREV VAA. NWP MDLS SHOWS A W-LY TO WSW-LY MOVMT TREND THRU T+6. ...SAMBUCCI NXT ADVISORY: WILL BE ISSUED BY 20211220/2100Z