FVXX23 KNES 311800 VA ADVISORY DTG: 20231231/1800Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2023/882 INFO SOURCE: GOES-16. VONA. WEBCAM. NWP MODELS. ERUPTION DETAILS: INTMT VA EMS. EST VA DTG: 31/1740Z EST VA CLD: SFC/FL150 S0004 W07739 - S0005 W07738 - S0018 W07757 - S0008 W07801 - S0004 W07739 MOV SW 15KT FCST VA CLD +6HR: 31/2330Z SFC/FL150 S0004 W07803 - S0004 W07740 - S0005 W07738 - S0019 W07758 - S0004 W07803 FCST VA CLD +12HR: 01/0530Z NO VA EXP FCST VA CLD +18HR: 01/1130Z NO VA EXP RMK: VA EM RPRTD IN VONA TO OVR 700M ABV SUMMIT MOVG SW. OTHER VA EMS SINCE PREV ADVY ALSO OBSD MOVG SW. AREAS AT AND NEAR SUMMIT OBSCD BY WX CLD CVR SO UNCERTAINTY EXISTS. NWP MDL FCSTS DIFFER GREATLY FM OBS AND RPRTS SO FCST BASED ON PERSISTENCE. ...HOSLEY NXT ADVISORY: WILL BE ISSUED BY 20240101/0000Z