FVXX21 KNES 162028 VA ADVISORY DTG: 20211016/2028Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/907 INFO SOURCE: GOES-16. VONA. WEBCAM. NWP MODELS. ERUPTION DETAILS: ONGOING VA EMS OBS VA DTG: 16/1950Z OBS VA CLD: SFC/FL160 S0005 W07740 - S0005 W07738 - S0024 W07750 - S0014 W07800 - S0005 W07740 MOV SW 20KT FCST VA CLD +6HR: 17/0200Z SFC/FL160 S0004 W07740 - S0005 W07738 - S0022 W07803 - S0007 W07805 - S0004 W07740 FCST VA CLD +12HR: 17/0800Z SFC/FL160 N0001 W07807 - S0004 W07738 - S0005 W07738 - S0012 W07808 - N0001 W07807 FCST VA CLD +18HR: 17/1400Z NO VA EXP RMK: VA IS RPRT GOING SW AT FL160 BASED ON VONA INFO, BUT IS VERY DIFFICULT TO OBS IN STLT IMAGERY DUE TO DENSE WX CLDS. NWP MDL INDICATEDS A CLOCKWISE SW TO W MOV THRU T+12 HRS. ...ZHU NXT ADVISORY: WILL BE ISSUED BY 20211017/0230Z