FVXX20 KNES 301950 VA ADVISORY DTG: 20181230/1950Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0005 W07740 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2018/1240 INFO SOURCE: GOES-EAST. GUAYAQUIL MWO. CIMSS VOLCAT. ERUPTION DETAILS: INTMT VA EMS 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