FVXX20 KNES 151727 VOLCANIC ASH ADVISORY ISSUED: 20070815/1727Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128 W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2007/494 INFORMATION SOURCE: GOES-12. INFRASOUND DETECTION. GEOPHYSICAL INST. ERUPTION DETAILS: EMISSION OF GASES AND OCCASIONAL ASH SINCE 15/1105Z OBS ASH DATE/TIME: 15/1645Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL160 MOVING TO W 15 KNOTS. FL160/FL270 MOVING TO SW 15-20 KNOTS. FCST ASH CLOUD +6H: 15/2300Z FCST ASH CLOUD +12H: 16/0500Z FCST ASH CLOUD +18H: 16/1100Z REMARKS: DUE TO CLOUDS NO VA SEEN IN IMAGERY. THERE CONTINUES TO BE OCASSIONAL SEISMIC SIGNALS AND AN IFRASOUND DETECTION OF CONTINUED ACTIVITY. WEST WINDS WILL BECOME MORE SOUTHWESTERLY COME NIGHTFALL. ...SWANSON NEXT ADVISORY: WILL BE ISSUED BY 20070815/2330Z