FVXX20 KWBC 060756 VOLCANIC ASH ADVISORY ISSUED: 2004MAR06/0800Z VAAC: WASHINGTON VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: N1643W06211 AREA: CARIBBEAN SUMMIT ELEVATION: 3000 FT (915 M) ADVISORY NUMBER: 2004/011 INFORMATION SOURCE: GOES-12 IMAGERY. GUADELOUPE UPPER AIR SOUNDING. ERUPTION DETAILS: VENTING OF GASES AND ASH STARTING AROUND 05/1100Z. OBS ASH DATE/TIME: 06/0715Z. OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL050 MOVING TO SW 20-25 KNOTS. FCST ASH CLOUD+6H: NOT AVBL FCST ASH CLOUD+12H: NOT AVBL FCST ASH CLOUD+18H: NOT AVBL REMARKS: IT IS DIFFICULT TO DETECT LOW LEVEL ASH IN MULTISPECTRAL IMAGERY. THE LAST VISIBLE IMAGE OF THE DAY AT 05/2155Z SHOWED A 5 NM WIDE PLUME EXTENDING TO ABOUT N1606W06314 OR ABOUT 70 NM WEST SOUTHWEST OF THE SUMMIT. THE HEIGHT IS STILL ESTIMATED BELOW FL050. NEXT ADVISORY: WILL BE ISSUED BY 2004MAR06/1400Z. NNNN