FVXX20 KNES 210410 VA ADVISORY DTG: 20181221/0410Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0005 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2018/1207 INFO SOURCE: GOES-EAST. VOLCANO WEB CAMERA. NWP MODELS. CIMSS VOLCAT. ERUPTION DETAILS: ONGOING VA EMS OBS VA DTG: 21/0345Z OBS VA CLD: SFC/FL170 N0001 W07808 - S0004 W07739 - S0005 W07739 - S0010 W07807 - N0001 W07808 MOV W 15-20KT FCST VA CLD +6HR: 21/1000Z SFC/FL170 S0004 W07739 - S0005 W07738 - S0014 W07808 - S0004 W07809 - S0004 W07739 FCST VA CLD +12HR: 21/1600Z SFC/FL170 NO ASH EXP FCST VA CLD +18HR: 21/2200Z NO ASH EXP RMK: VA EMS OBS IN WEBCAM. VA NOT VISIBLE IN STLT IMAGERY DUE TO WX CLDS. NWP MODEL GUIDEANCE SUGGESTS WINDS FM EAST. LTL CHG FCST. ...BOLL NXT ADVISORY: WILL BE ISSUED BY 20181221/1015Z