FVXX21 KNES 052318 VA ADVISORY DTG: 20210905/2318Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/740 INFO SOURCE: GOES-16. VONA. WEBCAM. NWP MODELS. VOLCAT. ERUPTION DETAILS: FRQNT VA EMS OBS VA DTG: 05/2250Z OBS VA CLD: SFC/FL170 N0014 W07757 - S0003 W07740 - S0005 W07741 - N0006 W07759 - N0014 W07757 MOV NW 10KT FCST VA CLD +6HR: 06/0500Z SFC/FL170 N0019 W07759 - S0003 W07739 - S0005 W07741 - N0006 W07803 - N0019 W07759 FCST VA CLD +12HR: 06/1100Z SFC/FL170 N0019 W07759 - S0004 W07739 - S0005 W07741 - N0005 W07804 - N0019 W07759 FCST VA CLD +18HR: 06/1700Z SFC/FL170 N0021 W07752 - S0003 W07739 - S0005 W07741 - N0016 W07801 - N0021 W07752 RMK: VA CLDS OBS EXTENDING 25NM NW OF THE SUMMIT, ALSO VIS IN WEBCAM. NWP MODELS SUGGEST LTLCG THRU T+18 HRS. ...COVERDALE NXT ADVISORY: WILL BE ISSUED BY 20210906/0515Z