FVXX20 KNES 101436 VA ADVISORY DTG: 20110510/1436Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 PSN: S0128 W07826 AREA: ECUADOR SUMMIT ELEV: 16480 FT (5023 M) ADVISORY NR: 2011/077 INFO SOURCE: GUAYAQUIL MWO. GOES-13. PILOT REPORT. ERUPTION DETAILS: VA OBSERVED TO FL330 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 NNNN