FVXX21 KNES 040754 VA ADVISORY DTG: 20210804/0754Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0005 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/599 INFO SOURCE: GOES-16. NWP MODELS. VOLCAT. ERUPTION DETAILS: CONT VA EMS OBS VA DTG: 04/0720Z OBS VA CLD: SFC/FL150 N0004 W07741 - S0004 W07740 - S0000 W07749 - N0004 W07741 MOV NW 10KT FCST VA CLD +6HR: 04/1330Z SFC/FL150 N0010 W07745 - S0004 W07740 - N0004 W07758 - N0010 W07745 FCST VA CLD +12HR: 04/1930Z NO VA EXP FCST VA CLD +18HR: 05/0130Z NO VA EXP RMK: CONT VA EMS OBS MOV NW FM SUMMIT. VA FCST TO CONT NW MOV THRU T+6HRS BEFORE DISP. VA ACT MODERATE. ...FISHER NXT ADVISORY: WILL BE ISSUED BY 20210804/1400Z