FVXX23 KNES 310902 VA ADVISORY DTG: 20210531/0902Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/404 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. ERUPTION DETAILS: POSSIBLE VA EM OBS VA DTG: 31/0830Z OBS VA CLD: SFC/FL140 S0003 W07747 - S0005 W07740 - S0005 W07740 - S0007 W07747 - S0003 W07747 MOV W 5KT FCST VA CLD +6HR: 31/1430Z SFC/FL140 S0002 W07747 - S0004 W07740 - S0005 W07739 - S0007 W07746 - S0002 W07747 FCST VA CLD +12HR: 31/2030Z NO VA EXP FCST VA CLD +18HR: 01/0230Z NO VA EXP RMK: VA EM NOT SEEN ON STLT IMAGERY DUE TO CLD CVR BUT WEB CAM SHOWS FRQT EMS WHICH MAY CONTAIN VA. ...KIM NXT ADVISORY: WILL BE ISSUED BY 20210531/1500Z