FVXX20 KNES 171739 VA ADVISORY DTG: 20120817/1738Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 PSN: S0128 W07826 AREA: ECUADOR SUMMIT ELEV: 16480 FT (5023 M) ADVISORY NR: 2012/326 INFO SOURCE: GUAYAQUIL MWO. GOES-13. GFS WINDS. SEISMIC DETECTION. VOLCANO WEB CAMERA. GEOPHYSICAL INST. ERUPTION DETAILS: ONGOING EMISSION OF GASES AND ASH OBS VA DTG: 17/1715Z OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA WINDS FL100/260 075/15KT FCST VA CLD +6HR: 17/2330Z FCST VA CLD +12HR: 18/0530Z FCST VA CLD +18HR: 18/1130Z RMK: NO VA DETECTED IN SAT IMAGERY DUE TO CLDS. THE VO UPDATED THEIR HEIGHT EST TO FL260 AT 1700Z. PLUME SEEN BRIEFLY IN WEBCAM. SEISMIC SIGNAL CONSTANT. LTLCHG IN FCST WINDS THRU EVENING. ...SWANSON NXT ADVISORY: WILL BE ISSUED BY 20120817/2330Z NNNN