FVXX21 KNES 271442 VA ADVISORY DTG: 20210827/1442Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/699 INFO SOURCE: GOES-16. NWP MODELS. ERUPTION DETAILS: POSS VA EMS OBS VA DTG: 27/1420Z OBS VA CLD: SFC/FL150 S0003 W07755 - S0004 W07740 - S0005 W07738 - S0009 W07750 - S0003 W07755 MOV SW 5KT FCST VA CLD +6HR: 27/2030Z NO VA EXP FCST VA CLD +12HR: 28/0230Z NO VA EXP FCST VA CLD +18HR: 28/0830Z NO VA EXP RMK: POSS VA EMS MOV SW FM SUMMIT. NO VA OBS IN SAT DATA DUE TO WX CLDS IN REGION OR RPTD VIA VONA. VA DIR DERIVED FM NWP MDLS. ...TUGGLE NXT ADVISORY: WILL BE ISSUED BY 20210827/2045Z