FVXX21 KWBC 090513 VOLCANIC ASH ADVISORY ISSUED: 2003MAY09/0530Z VAAC: WASHINGTON VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: N1643W06211 AREA: CARIBBEAN SUMMIT ELEVATION: 3000 FT (915 M) ADVISORY NUMBER: 2003/496 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. UPPER AIR SOUNDING. ERUPTION DETAILS: EMISSION OF GASES AND ASH. OBS ASH DATE/TIME: 09/0445Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. ASH IS MOVING W 10-15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS REMARKS: IT HAS BECOME DIFFICULT TO DETECT ASH IN INFRARED IMAGERY. AN OCCASIONAL HOT SPOT CAN BE DETECTED IN SHORTWAVE IMAGERY..KARST NEXT ADVISORY: WILL BE ISSUED BY 2003MAY09/1130Z. NNNN