FVXX23 KNES 251715 VA ADVISORY DTG: 20211225/1715Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/1173 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. ERUPTION DETAILS: OCNL VA EMS OBS VA DTG: 25/1650Z OBS VA CLD: SFC/FL150 S0004 W07740 - S0017 W07729 - S0020 W07733 - S0005 W07741 - S0004 W07740 MOV SE 10KT FCST VA CLD +6HR: 25/2300Z SFC/FL150 S0004 W07739 - S0020 W07729 - S0023 W07735 - S0004 W07741 - S0004 W07739 FCST VA CLD +12HR: 26/0500Z SFC/FL150 S0004 W07739 - S0022 W07731 - S0023 W07738 - S0004 W07741 - S0004 W07739 FCST VA CLD +18HR: 26/1100Z SFC/FL150 S0004 W07739 - S0024 W07734 - S0026 W07740 - S0004 W07741 - S0004 W07739 RMK: VA CLDS NOT OBSD IN SAT DUE TO SUSTAINED MET CLDS. WEBCAM OCCASSIONALY SHOWED VA EMS BETWEEN MET CLDS. NWP MDL FCST LTLCG THRU T+18HRS. ...ZENG NXT ADVISORY: WILL BE ISSUED BY 20211225/2315Z