FVXX20 KNES 121635 VA ADVISORY DTG: 20180512/1635Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0005 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2018/491 INFO SOURCE: GOES-EAST. GUAYAQUIL MWO. NWP MODELS. CIMSS VOLCAT. VOLCANO WEB CAMERA. ERUPTION DETAILS: POSS VA EM AT 1357Z OBS VA DTG: 12/1615Z OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA WINDS SFC/FL130 090/5-10KT FCST VA CLD +6HR: 12/2230Z FCST VA CLD +12HR: 13/0430Z FCST VA CLD +18HR: 13/1030Z RMK: VA EM RPRTD BY MWO. NO VA SEEN IN STLT IMAGERY AND WEB CAM WITH WX CLDS IN REGION WITH A FEW BREAKS NEAR SUMMIT. NWP MDL GUIDANCE INDICATES ANY VA EM WOULD MOV TO THE W. ...HOSLEY NXT ADVISORY: WILL BE ISSUED BY 20180512/2230Z