FVXX21 KNES 210010 VOLCANIC ASH ADVISORY ISSUED: 20070321/0009Z VAAC: WASHINGTON VOLCANO: SANGAY 1502-09 LOCATION: S0201 W07820 AREA: ECUADOR SUMMIT ELEVATION: 17159 FT (5230 M) ADVISORY NUMBER: 2007/055 INFORMATION SOURCE: GOES-12. GFS WINDS. PILOT REPORT. ERUPTION DETAILS: ASH REPORTED AT 20/1743Z OBS ASH DATE/TIME: 20/2315Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL220 MOVING TO SW 5-10 KNOTS. FCST ASH CLOUD +6H: 21/0530Z FCST ASH CLOUD +12H: 21/1130Z FCST ASH CLOUD +18H: 21/1730Z REMARKS: AT 20/1743Z A PILOT REPORTED ASH AT FL220 . ASH CANNOT BE SEEN IN GOES-12 SATELLITE IMAGERY BECAUSE OF WEATHER CLOUDS. ...BROWN NEXT ADVISORY: WILL BE ISSUED BY 20070321/0615Z