FVXX20 KNES 211550 VA ADVISORY DTG: 20181221/1550Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2018/1209 INFO SOURCE: GOES-EAST. GUAYAQUIL MWO. VOLCANO WEB CAMERA. NWP MODELS. ERUPTION DETAILS: POSS VA EMS OBS VA DTG: 21/1515Z OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA WINDS SFC/FL140 090/10-15KT FCST VA CLD +6HR: 21/2130Z FCST VA CLD +12HR: 22/0330Z FCST VA CLD +18HR: 22/0930Z RMK: VA IS NOT SEEN IN STLT IMAGERY OR WEB CAM DUE TO THICK WX CLDS. PREVIOUS VA REPORT AT 1156Z INDICATES VA MOV W AT FL140. ...ZHU NXT ADVISORY: WILL BE ISSUED BY 20181221/2145Z