FVXX21 KNES 120858 VA ADVISORY DTG: 20210812/0858Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0005 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/631 INFO SOURCE: GOES-16. NWP MODELS. ERUPTION DETAILS: PSBL VA EMS. OBS VA DTG: 12/0820Z OBS VA CLD: SFC/FL160 S0001 W07749 - S0004 W07739 - S0005 W07739 - S0007 W07750 - S0001 W07749 MOV W 10KT FCST VA CLD +6HR: 12/1430Z SFC/FL160 N0002 W07754 - S0004 W07739 - S0005 W07739 - S0007 W07756 - N0002 W07754 FCST VA CLD +12HR: 12/2030Z NO VA EXP FCST VA CLD +18HR: 13/0230Z NO VA EXP RMK: NO VA CLDS OBSD ON WEBCAM OR STLT IMAGERY DUE TO WX CLD CVR. SML VA CLDS STILL PSBL BLO WX CLD CVR. NWP MDLS SUGGEST ANY VA CLDS MOVG W-WNW THRU T+6. ...HOSLEY NXT ADVISORY: WILL BE ISSUED BY 20210812/1500Z