FVXX21 KNES 101856 VA ADVISORY DTG: 20210910/1856Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/760 INFO SOURCE: GOES-16. NWP MODELS. VOLCAT. ERUPTION DETAILS: CONT VA EMS OBS VA DTG: 10/1820Z OBS VA CLD: SFC/FL150 N0001 W07753 - S0004 W07739 - S0004 W07755 - N0001 W07753 MOV W 10KT FCST VA CLD +6HR: 11/0030Z SFC/FL150 N0004 W07756 - S0004 W07739 - S0005 W07758 - N0004 W07756 FCST VA CLD +12HR: 11/0630Z NO VA EXP FCST VA CLD +18HR: 11/1230Z NO VA EXP RMK: CONT VA EMS OBS MOV W IN STLT IMAGERY. VA FCST TO CONT W TO NW MOV THRU T+6HRS BEFORE DISP. VO ACT MODERATE. ...FISHER NXT ADVISORY: WILL BE ISSUED BY 20210911/0100Z