FVXX20 KWBC 222315 VOLCANIC ASH ADVISORY ISSUED: 2003MAR22/2330Z VAAC: WASHINGTON VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: N1643W06211 AREA: CARIBBEAN SUMMIT ELEVATION: 3000 FT (915M) ADVISORY NUMBER: 2003/315 INFORMATION SOURCE: GOES-8 IMAGERY. GFS MODEL WINDS FORECAST ERUPTION DETAILS: CONTINUOUS EMISSION OF GASES AND ASH. OBS ASH DATE/TIME: 22/2245Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL100 MOVING SW 10-15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: CLOUDS PREVENT DETECTION OF ASH IN SATELLITE IMAGERY. A POSSIBLE AREA OF MIXED ASH AND CLOUDS IS OBSERVED SOUTHWEST OF THE VOLCANO. KARST NEXT ADVISORY: WILL BE ISSUED BY 2003MAR23/0530Z NNNN