FVXX20 KNES 120007 VA ADVISORY DTG: 20181212/0007Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2018/1173 INFO SOURCE: GUAYAQUIL MWO. GEOPHYSICAL INST. ERUPTION DETAILS: EM OBS TO FL140 MOV W AT 11/2305Z RMK: WE HAVE RECEIVED INFORMATION SUGGESTING A POSSIBLE VA EMISSION. WE WILL GATHER FURTHER INFORMATION AND ISSUE A FULL ADVISORY AS SOON AS POSSIBLE. NXT ADVISORY: AS SOON AS POSSIBLE