FVXX23 KNES 290425 VA ADVISORY DTG: 20211229/0425Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/1188 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. ERUPTION DETAILS: POSSIBLE VA EM OBS VA DTG: 29/0400Z OBS VA CLD: SFC/FL150 S0000 W07747 - S0004 W07740 - S0005 W07740 - S0004 W07749 - S0000 W07747 MOV W 5KT FCST VA CLD +6HR: 29/1000Z SFC/FL150 S0000 W07747 - S0005 W07740 - S0005 W07740 - S0004 W07748 - S0000 W07747 FCST VA CLD +12HR: 29/1600Z NO VA EXP FCST VA CLD +18HR: 29/2200Z NO VA EXP RMK: VA EM NOT SEEN ON STLT IMAGERY DUE TO CLD CVR. HOWEVER WEBCAM SHOWS EMS WHICH MAY CONTAIN VA. VA FL AND FRCST BASED ON PREVIOUS VAA AND NWP MODELS. ...KIM NXT ADVISORY: WILL BE ISSUED BY 20211229/1030Z