FVXX21 KNES 180418 VA ADVISORY DTG: 20210818/0418Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/655 INFO SOURCE: GOES-16. NWP MODELS. VOLCAT. ERUPTION DETAILS: CONT VA EMS OBS VA DTG: 18/0340Z OBS VA CLD: SFC/FL150 N0002 W07758 - S0004 W07739 - S0005 W07759 - N0002 W07758 MOV W 15KT FCST VA CLD +6HR: 18/0930Z SFC/FL150 N0002 W07759 - S0004 W07740 - S0005 W07800 - N0002 W07759 FCST VA CLD +12HR: 18/1530Z NO VA EXP FCST VA CLD +18HR: 18/2130Z NO VA EXP RMK: CONT VA 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 20210818/1015Z