FVXX22 KNES 281822 VOLCANIC ASH ADVISORY ISSUED: 2004DEC28/1821Z VAAC: WASHINGTON VOLCANO: SANGAY 1502-09 LOCATION: S0201W07820 AREA: ECUADOR SUMMIT ELEVATION: 17159 FT (5230 M) ADVISORY NUMBER: 2004/010 INFORMATION SOURCE: GOES-12. GFS MODEL WINDS. ERUPTION DETAILS: ASH/STEAM PLUME SEEN OBS ASH DATE/TIME: NIL OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. FCST ASH CLOUD +6H: NOT AVBL FCST ASH CLOUD +12H: NOT AVBL FCST ASH CLOUD +18H: NOT AVBL REMARKS: THE FAINT ASH PLUME VISIBLE EARLIER THIS MORNING CAN NO LONGER BE SEEN. ... NEXT ADVISORY: NO FURTHER ADVISORIES NNNN