FVXX21 KNES 161317 VA ADVISORY DTG: 20210916/1317Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/783 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. ERUPTION DETAILS: INTMT VA CLDS OBSD OBS VA DTG: 16/1250Z OBS VA CLD: SFC/FL150 N0004 W07755 - S0004 W07739 - S0005 W07740 - N0000 W07758 - N0004 W07755 MOV NW 20KT FCST VA CLD +6HR: 16/1900Z SFC/FL150 N0004 W07756 - S0004 W07739 - S0005 W07740 - S0000 W07758 - N0004 W07756 FCST VA CLD +12HR: 17/0100Z NO VA EXP FCST VA CLD +18HR: 17/0700Z NO VA EXP RMK: INTMT VA CLDS OBSD MOV NW OF SUMMIT APRX 20 NM. VA ACTVTY HAS SLOWED IN LAST TWO HRS. WX CLDS OBSCURES VIS. FCST MOVMT BASED ON NWP MDL GDNC. ...ZENG NXT ADVISORY: WILL BE ISSUED BY 20210916/1915Z