FVXX21 KNES 200855 VOLCANIC ASH ADVISORY ISSUED: 20070820/0855Z VAAC: WASHINGTON VOLCANO: SANGAY 1502-09 LOCATION: S0201 W07820 AREA: ECUADOR SUMMIT ELEVATION: 17159 FT (5230 M) ADVISORY NUMBER: 2007/081 INFORMATION SOURCE: GOES-12. GFS WINDS. INFRASOUND DETECTION. ERUPTION DETAILS: PILOT REPORT OF EMISSION AT 19/2032Z OBS ASH DATE/TIME: 20/0815Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL200 MOVING TO W -SW 15 KNOTS. FCST ASH CLOUD +6H: 20/1430Z FCST ASH CLOUD +12H: 20/2030Z FCST ASH CLOUD +18H: 21/0230Z REMARKS: DUE TO CLOUDS NO VA OR HOTSPOT HAS BEEN DETECTED. THE INFRASOUND HAS ALSO DECREASED OVER THE PAST 5 HOURS. WILL WAIT FOR DAYLIGHT TO PERHAPS END THIS. ...SWANSON NEXT ADVISORY: WILL BE ISSUED BY 20070820/1500Z