FVXX20 KNES 201823 VA ADVISORY DTG: 20101220/1823Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 PSN: S0128 W07826 AREA: ECUADOR SUMMIT ELEV: 16480 FT (5023 M) ADVISORY NR: 2010/521 INFO SOURCE: GOES-13. GFS WINDS. SEISMIC DETECTION. ERUPTION DETAILS: EMISSION SEEN 20/1615Z OBS VA DTG: 20/1745Z OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA WINDS SFC/FL200 090/0-5KT FCST VA CLD +6HR: 21/0000Z FCST VA CLD +12HR: 21/0600Z FCST VA CLD +18HR: 21/1200Z RMK: VA NOT CURRENTLY OBSERVED IN STLT IMAGERY BUT NEAR SUMMIT VA SEEN IN 20/1615Z VIS STLT IMAGERY. SEISMIC ACTIVITY ELEVATED AT SAME TIME VA SEEN AND CONTINUES TO HAVE PERIODS OF ELEVATED ACTIVITY. ...SALEMI NXT ADVISORY: WILL BE ISSUED BY 20101221/0030Z NNNN