FVXX20 KNES 271954 VA ADVISORY DTG: 20181227/1954Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2018/1231 INFO SOURCE: GOES-EAST. VOLCANO WEB CAMERA. NWP MODELS. CIMSS VOLCAT. ERUPTION DETAILS: VA EM OBS VA DTG: 27/1930Z OBS VA CLD: SFC/FL140 N0005 W07756 - S0004 W07739 - S0005 W07739 - N0001 W07757 - N0005 W07756 MOV W 10-15KT FCST VA CLD +6HR: 28/0130Z SFC/FL140 N0002 W07757 - S0004 W07739 - S0005 W07739 - S0001 W07757 - N0002 W07757 FCST VA CLD +12HR: 28/0730Z SFC/FL140 NO ASH EXP FCST VA CLD +18HR: 28/1330Z NO ASH EXP RMK: DISCRETE VA EM SEEN IN STLT EXTND APRX 20 NM WNW OF SUMMIT BEFORE DISAPPEARING IN MET CLDS NEAR THE VOLCANO CAYAMBE. LOW CONFIDENCE IN DURATION OF CURRENT SERIES OF VA EM. ...VELASCO NXT ADVISORY: WILL BE ISSUED BY 20181228/0200Z