FVXX20 KWBC 250621 VOLCANIC ASH ADVISORY ISSUED: 2003DEC25/0630Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/646 INFORMATION SOURCE: GOES-12 IMAGERY. MODEL WINDS FORECAST. ERUPTION DETAILS: ASH EMISSIONS OBS ASH DATE/TIME: 25/0545Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/180 MOVING TO W 10-15 KNOTS. FL200/220 MOVING TO E 5-10 KNOTS. FCST ASH CLOUD+6H: NOT AVBL FCST ASH CLOUD+12H: NOT AVBL FCST ASH CLOUD+18H: NOT AVBL REMARKS: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 25/0545Z. HOWEVER THE PRESENCE OF LOW LEVEL WEATHER CLOUDS MIGHT BE HINDERING ASH DETECTION. NEXT ADVISORY: WILL BE ISSUED BY 2003DEC25/1230Z. NNNN