FVXX23 KNES 311218 VA ADVISORY DTG: 20231231/1218Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2023/881 INFO SOURCE: GOES-16. NWP MODELS. ERUPTION DETAILS: VA CLD OBSD. OBS VA DTG: 31/1140Z OBS VA CLD: SFC/FL150 S0004 W07740 - S0005 W07738 - S0017 W07746 - S0013 W07750 - S0004 W07740 MOV SW 15KT FCST VA CLD +6HR: 31/1730Z SFC/FL150 S0004 W07739 - S0020 W07733 - S0020 W07741 - S0005 W07740 - S0004 W07739 FCST VA CLD +12HR: 31/2330Z NO VA EXP FCST VA CLD +18HR: 01/0530Z NO VA EXP RMK: VA CLD SEEN ABT 15 NMI SW OF SUMMIT. VA NOT OBSD IN WEBCAM IMAGERY. NWP MDLS FCST VA TO MOV SSE BY T+6HRS. ...HOSLEY NXT ADVISORY: WILL BE ISSUED BY 20231231/1815Z