FVXX21 KWBC 030100 VOLCANIC ASH ADVISORY ISSUED: 2003MAY03/0100Z VAAC: WASHINGTON VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: N1643W06211 AREA: CARIBBEAN SUMMIT ELEVATION: 3000 FT (915 M) ADVISORY NUMBER: 2003/471 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. UPPER AIR SOUNDING ERUPTION DETAILS: EMISSION OF GASES AND ASH. OBS ASH DATE/TIME: 03/0015Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL060 MOVING W 15-25 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS REMARKS: NO ASH OR HOTSPOTS CAN BE SEEN IN MULTISPECTRAL OR INFRARED SATELLITE IMAGERY THROUGH 0015Z. HOWEVER PRIOR TO NIGHTFALL A FAIRLY DISTINCT AND LARGE ASH PLUME TO FL060 COULD BE SEEN IN VISIBLE IMAGERY. THE PLUME EXTENDED FROM THE SUMMIT TOWARD THE WEST. NEXT ADVISORY: WILL BE ISSUED BY 2003MAY03/0700Z. NNNN