FVXX21 KNES 151504 VA ADVISORY DTG: 20210815/1504Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/644 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. ERUPTION DETAILS: VA EMS CONT OBS VA DTG: 15/1430Z OBS VA CLD: SFC/FL170 N0013 W07753 - S0004 W07738 - S0005 W07740 - N0005 W07759 - N0013 W07753 MOV NW 15KT FCST VA CLD +6HR: 15/2030Z SFC/FL170 N0004 W07802 - S0004 W07738 - S0005 W07739 - S0004 W07804 - N0004 W07802 FCST VA CLD +12HR: 16/0230Z NO VA EXP FCST VA CLD +18HR: 16/0830Z NO VA EXP RMK: VA DETECTED ON STLT MOVG NW OF SUMMIT. WEBCAM SHOWS SUMMIT OBSC WBY WX CLDS. MDL WINDS AT FL FCST TO BACK BECMG MORE FM THE ESE NXT 6 HR. ...KONON NXT ADVISORY: WILL BE ISSUED BY 20210815/2100Z