FVXX21 KNES 112356 VA ADVISORY DTG: 20210911/2356Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/763 INFO SOURCE: GOES-16. NWP MODELS. VOLCAT. ERUPTION DETAILS: NEW EMS OBS OBS VA DTG: 11/2320Z OBS VA CLD: SFC/FL160 N0007 W07757 - S0004 W07739 - S0002 W07801 - N0007 W07757 MOV W 15KT FCST VA CLD +6HR: 12/0530Z SFC/FL160 N0008 W07759 - S0004 W07739 - S0002 W07803 - N0008 W07759 FCST VA CLD +12HR: 12/1130Z NO VA EXP FCST VA CLD +18HR: 12/1730Z NO VA EXP RMK: NEW EMS OBS MOV W IN STLT IMAGERY. VA FCST TO CONT W MOV THRU T+6HRS BEFORE DISP. VO ACT MODERATE. ...FISHER NXT ADVISORY: WILL BE ISSUED BY 20210912/0600Z