FVXX21 KNES 311723 VA ADVISORY DTG: 20211031/1723Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/971 INFO SOURCE: GOES-16. NWP MODELS. ERUPTION DETAILS: POSS VA CLDS OBS VA DTG: 31/1700Z OBS VA CLD: SFC/FL150 N0004 W07749 - S0004 W07740 - S0005 W07741 - N0001 W07752 - N0004 W07749 MOV NW 5KT FCST VA CLD +6HR: 31/2300Z SFC/FL150 N0008 W07749 - S0003 W07739 - S0005 W07741 - N0003 W07752 - N0008 W07749 FCST VA CLD +12HR: 01/0500Z NO VA EXP FCST VA CLD +18HR: 01/1100Z NO VA EXP RMK: VA CLDS NOT SEEN IN SAT AND WEBCAM DUE TO MET CLDS. NWP MDL FCST LTLCG THRU T+6HRS. ...ZENG NXT ADVISORY: WILL BE ISSUED BY 20211031/2330Z