FVXX21 KNES 071548 VA ADVISORY DTG: 20210807/1548Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0005 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/613 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. ERUPTION DETAILS: VA CLD OBS AT 1355Z OBS VA DTG: 07/1500Z OBS VA CLD: SFC/FL170 N0011 W07747 - S0002 W07740 - S0007 W07741 - N0000 W07757 - N0011 W07747 MOV NW 20KT FCST VA CLD +6HR: 07/2100Z SFC/FL170 N0014 W07759 - S0002 W07739 - S0007 W07741 - N0002 W07805 - N0014 W07759 FCST VA CLD +12HR: 08/0300Z SFC/FL170 N0021 W07802 - S0003 W07738 - S0007 W07740 - N0004 W07816 - N0021 W07802 FCST VA CLD +18HR: 08/0900Z SFC/FL170 N0014 W07758 - S0002 W07740 - S0007 W07741 - N0002 W07805 - N0014 W07758 RMK: VA CLD OBS IN WEBCAM ABV WX CLDS. THE VA CLD WAS SEEN IN G16 SAT IMAGERY MOV WNW. MDL GUIDANCE SUGGESTS CONT WNW MOV THRU T+18 HRS. ...COVERDALE NXT ADVISORY: WILL BE ISSUED BY 20210807/2145Z