FVXX21 KNES 200258 VOLCANIC ASH ADVISORY ISSUED: 20070820/0258Z VAAC: WASHINGTON VOLCANO: SANGAY 1502-09 LOCATION: S0201 W07820 AREA: ECUADOR SUMMIT ELEVATION: 17159 FT (5230 M) ADVISORY NUMBER: 2007/080 INFORMATION SOURCE: GOES-12. GFS WINDS. INFRASOUND DETECTION. ERUPTION DETAILS: ERUPTION OBSERVED BY PILOT AT 19/2032Z OBS ASH DATE/TIME: 20/0215Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL200 MOVING TO W -SW 15-20 KNOTS. FCST ASH CLOUD +6H: 20/0830Z FCST ASH CLOUD +12H: 20/1430Z FCST ASH CLOUD +18H: 20/2030Z REMARKS: DUE TO CLOUDS NO VA DETECTED. THERE HAS BEEN SOME INFRASONIC DETECTIONS OF ACTIVITY AT THE VOLCANO. ...SWANSON NEXT ADVISORY: WILL BE ISSUED BY 20070820/0900Z