FVXX21 KWBC 120030 VOLCANIC ASH ADVISORY ISSUED: 2004MAR12/0030Z VAAC: WASHINGTON VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: N1671W06218 AREA: W INDIES SUMMIT ELEVATION: 3002 FT (915 M) ADVISORY NUMBER: 2004/28 INFORMATION SOURCE: GOES-12 IMAGERY. UPPER AIR SOUNDING. ERUPTION DETAILS: CONTINUED ASH VENTING. OBS ASH DATE/TIME: 12/0015Z. OBS ASH CLOUD: ASH NOT IDENTIFIABLE IN SATELLITE DATA. WINDS SFC/FL050 MOVING TO W 15-20 KNOTS. FCST ASH CLOUD+6H: NOT AVBL FCST ASH CLOUD+12H: NOT AVBL FCST ASH CLOUD+18H: NOT AVBL REMARKS: THE LAST VISIBLE IMAGE OF THE DAY AT 11/2045Z SHOWED A PLUME UP TO 10 NM WIDE EXTENDING APPROXIMATELY TO THE POINT N1656W06314. THE PLUME WAS APPROXIMATELY 60 NM LONG. NEXT ADVISORY: WILL BE ISSUED BY 2004MAR12/0630Z. NNNN