FVXX21 KWBC 040101 VOLCANIC ASH ADVISORY ISSUED: 2003MAY04/0100Z VAAC: WASHINGTON VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: N1643W06211 AREA: CARIBBEAN SUMMIT ELEVATION: 3000 FT (915 M) ADVISORY NUMBER: 2003/475 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. UPPER AIR SOUNDING ERUPTION DETAILS: EMISSION OF GASES AND ASH. OBS ASH DATE/TIME: 04/0015Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL060 MOVING W 20 KNOTS. WINDS FL060/FL100 MOVING S 10-15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS REMARKS: NO ASH OR HOTSPOT CAN BE SEEN IN THE MULTISPECTRAL OR INFRARED SATELLITE IMAGERY THROUGH 0015Z. PRIOR TO NIGHTFALL A PLUME OF ASH TO FL060 MOVING WESTWARD AND ASH TO FL100 MOVING SOUTHWARD COULD BE SEEN IN THE VISIBLE IMAGERY...BROWN NEXT ADVISORY: WILL BE ISSUED BY 2003MAY04/0700Z. NNNN