FVXX20 KWBC 131338 VOLCANIC ASH ADVISORY ISSUE: 2003JUL13/1330Z VAAC: WASHINGTON VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: N1643W06211 AREA: CARIBBEAN SUMMIT ELEVATION: 3000 FT (915 M) ADVISORY NUMBER: 2003/579 INFORMATION SOURCE: GOES-12 IMAGERY. GUADELOUPE UPPER AIR SOUNDING. ERUPTION DETAILS: NEW ERUPTION AROUND 13/1315Z. OBS ASH DATE/TIME: 13/1315Z OBS ASH CLOUD: SFC/FL500 ASH NOT IDENTIFIABLE IN SATELLITE DATA. WINDS SFC/FL500 MOVING NE 35-40 KNOTS. WINDS SFC/FL090 MOVING W AT 25 KNOTS. FL100/FL300 MOVING NW 15-25 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS AND VAFTAD. REMARKS: THE MONTSERRAT VOLCANO OBSERVATORY REPORTED A MAJOR EXPLOSION AT ABOUT 1315Z TO UNKNOWN HEIGHT. ASH WAS NOT SEEN IN THE 1315Z. NEW ADVISORY WILL BE ISSUED WHEN MORE INFORMATION IS AVAILABLE. NEXT ADVISORY: WILL BE ISSUED BY 2003JUL13/1930Z. NNNN