FVXX20 KWBC 122347 VOLCANIC ASH ADVISORY ISSUED: 2003APR12/2345Z VAAC: WASHINGTON VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: N1643W06211 AREA: CARIBBEAN SUMMIT ELEVATION: 3000 FT (915M) ADVISORY NUMBER: 2003/401 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: CONTINUED EMISSION OF GASES AND ASH. OBS ASH DATE/TIME: 12/2315Z. OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL070 MOVING NW 15-20 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: ASH HAD BECOME EITHER TOO DIFFUSE OR TOO LOW IN ALTITUDE TO BE DETECTED IN SATELLITE IMAGERY THROUGH 2315Z. NEXT ADVISORY: WILL BE ISSUED BY 2003APR13/0600Z. NNNN