FVXX25 KNES 150557 VA ADVISORY DTG: 20211215/0557Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/1147 INFO SOURCE: GOES-16. NWP MODELS. ERUPTION DETAILS: VA EMS PSBL OBS VA DTG: 15/0540Z OBS VA CLD: SFC/FL150 S0004 W07740 - S0006 W07738 - S0014 W07753 - S0009 W07755 - S0004 W07740 MOV SW 10KT FCST VA CLD +6HR: 15/1130Z NO VA EXP FCST VA CLD +12HR: 15/1730Z NO VA EXP FCST VA CLD +18HR: 15/2330Z NO VA EXP RMK: VA NOT SEEN IN STLT DUE TO WX CLD CVR. LGT VA EMS ARE PSBL. NWP MODELS SUPPORT ASH MOVG TO THE SW BLW FL150. ...RAMIREZ NXT ADVISORY: WILL BE ISSUED BY 20211215/1200Z