FVXX20 KWBC 031316 VOLCANIC ASH ADVISORY ISSUED: 2003APR03/1330Z VAAC: WASHINGTON VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: N1643W06211 AREA: CARIBBEAN SUMMIT ELEVATION: 3000 FT (915M) ADVISORY NUMBER: 2003/363 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: CONTINUED EMISSION OF GASES AND ASH. OBS ASH DATE/TIME: 03/1245Z. OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL070 WEST 15-20 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: IT IS DIFFICULT TO DETECT VOLCANIC ASH OVER THE VOLCANO DUE TO BROKEN WEATHER CLOUDS. AN OCCASIONAL HOT SPOT CAN BE SEEN IN SHORTWAVE IMAGERY. WINDS FROM THE GFS MODEL SUGGEST THAT ANY ASH UP TO FL070 SHOULD MOVE TOWARDS THE WEST AT 15 TO 20 KNOTS. NEXT ADVISORY: WILL BE ISSUED BY 2003APR03/1930Z. NNNN