FVXX21 KNES 311829 VA ADVISORY DTG: 20210831/1829Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0005 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/719 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. ERUPTION DETAILS: PSBL CONTG VA EMS. OBS VA DTG: 31/1810Z OBS VA CLD: SFC/FL150 N0009 W07753 - S0002 W07739 - S0005 W07740 - S0001 W07759 - N0009 W07753 MOV NW 10KT FCST VA CLD +6HR: 01/0000Z NO VA EXP FCST VA CLD +12HR: 01/0600Z NO VA EXP FCST VA CLD +18HR: 01/1200Z NO VA EXP RMK: VA NOT OBS IN SAT OR WEBCAM DUE TO MET CLD OBSCN. CONTG VA EMS PSBL BASED ON RECENT ACT. OBS VA AREA ESTD FM NWP MDLS AND PREV VAA. ...CLARK NXT ADVISORY: WILL BE ISSUED BY 20210901/0030Z