FVXX21 KNES 282130 VA ADVISORY DTG: 20171228/2130Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0005 W07740 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2017/818 INFO SOURCE: GUAYAQUIL MWO. ERUPTION DETAILS: EMS TO FL140 REPORTED AT 28/2018Z BY GUAYAQUIL WMO 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