FVXX20 KWBC 210345 VOLCANIC ASH ADVISORY ISSUED: 2003JAN21/0400Z VAAC: WASHINGTON VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: N1643W06211 AREA: CARIBBEAN SUMMIT ELEVATION: 3000 FT (915M) ADVISORY NUMBER: 2003/075 INFORMATION SOURCE: GOES-8 IMAGERY. NOAA-17 IMAGERY. 00Z GUADELOUPE UPPER AIR SOUNDING. ERUPTION DETAILS: CONTINUING ASH AND STEAM EMISSIONS. OBS ASH DATE/TIME: 21/0315Z. OBS ASH CLOUD: ASH NOT IDENTIFIABLE ON SATELLITE IMAGERY. WINDS SFC/FL060 MOVING W AT 5 - 10 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: A HIGH AMOUNT OF WEATHER CLOUDS HAVE MADE ASH DETECTION VERY DIFFICULT TONIGHT NEAR MONTSERRAT. THE 0219Z NOAA-17 IMAGERY SHOWED A HOTSPOT THROUGH THE CLOUDS SO THERE IS A GOOD LIKELYHOOD THAT ASH IS STILL PRESENT. WILL CONTINUE TO MONITOR THE VOLCANO FOR MAJOR CHANGES IN ASH ACTIVITY...GALLINA NEXT ADVISORY: WILL BE ISSUED BY 2003JAN21/1000Z. NNNN