FVXX20 KWBC 301850 VOLCANIC ASH ADVISORY ISSUED: 2003DEC30/1900Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/669 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST ERUPTION DETAILS: CONTINUOUS GAS AND ASH EMISSIONS. OBS ASH DATE/TIME: 30/1815Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/200 MOVING TO S FL200/250 MOVING TO N-NE 10-15 KNOTS. FCST ASH CLOUD+6H: NOT AVBL FCST ASH CLOUD+12H: NOT AVBL FCST ASH CLOUD+18H: NOT AVBL REMARKS: THE THIN ASH PLUME VISIBLE EARLIER GRADUALLY BECAME MORE OF AN EASTERLY PLUME BEFORE BECOMING TOO THIN TO DETECT IN THE CLOUDS. NEXT ADVISORY: WILL BE ISSUED BY 2003DEC31/0100Z. NNNN