FVXX20 KWBC 210400 VOLCANIC ASH ADVISORY ISSUED: 2002DEC21/0400Z VAAC: WASHINGTON VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: N1643W06211 AREA: CARIBBEAN SUMMIT ELEVATION: 3000 FT (915M) ADVISORY NUMBER: 2002/240 INFORMATION SOURCE: GOES-8 IMAGERY. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: ASH EMISSIONS OBS ASH DATE/TIME: 21/0315Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL100 MOVING SW 5-15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: VISIBLE IMAGERY THROUGH 20/2132Z SHOWED A PLUME OF SOUTHWESTWARD MOVING ASH TO FL100. THIS ASH WAS THIN AND CANNOT CURRENTLY BE SEEN IN MULTISPECTRAL IMAGERY THROUGH 21/0315Z. NO HOTSPOT CAN BE SEEN AT THE VOLCANO POSSIBLY BECAUSE OF THE LOW LEVEL CLOUD COVER. NEXT ADVISORY: WILL BE ISSUED BY 2002DEC21/1000Z NNNN