FVXX24 KNES 201904 VA ADVISORY DTG: 20231220/1904Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2023/853 INFO SOURCE: GOES-16. NWP MODELS. ERUPTION DETAILS: POSS VA EMS OBS VA DTG: 20/1830Z OBS VA CLD: SFC/FL150 S0005 W07739 - S0016 W07733 - S0018 W07742 - S0005 W07739 MOV S 5KT FCST VA CLD +6HR: 21/0030Z NO VA EXP FCST VA CLD +12HR: 21/0630Z NO VA EXP FCST VA CLD +18HR: 21/1230Z NO VA EXP RMK: VA WAS OBS A FEW HOURS AGO MOVING S, BUT IS NOT OBS ON STLT AT THE PRESENT. WEBCAM IS NOT AVAILABLE. VA IS DRAWN BASED ON PREV VA EXTENT AND NWP MDL WND. ...ZHU NXT ADVISORY: WILL BE ISSUED BY 20231221/0100Z