FVXX21 KWBC 310245 VOLCANIC ASH ADVISORY ISSUED: 2004MAR31/0300Z VAAC: WASHINGTON VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: N1643W06211 AREA: W.INDIES SUMMIT ELEVATION: 3002 FT (915 M) ADVISORY NUMBER: 2004/73 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. UPPER AIR SOUNDING. ERUPTION DETAILS: CONTINUOUS ASH VENTING OBS ASH DATE/TIME: 31/0215Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL060 MOVING TO NE 5 KTS. FCST ASH CLOUD +6H: NOT AVBL FCST ASH CLOUD +12H: NOT AVBL FCST ASH CLOUD +18H: NOT AVBL REMARKS: THE ASH PLUME OBSERVED EARLIER HAS BECOME DIFFICULT TO DETECT IN MULTISPECTRAL IMAGERY. AN OCCASIONAL HOT SPOT CAN STILL BE DETECTED IN SHORTWAVE IMAGERY. KARST NEXT ADVISORY: WILL BE ISSUED BY 2004MAR31/0900Z NNNN