FVXX20 KWBC 170319 VOLCANIC ASH ADVISORY ISSUED: 2003APR17/0330 VAAC: WASHINGTON VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: N1643W06211 AREA: CARIBBEAN SUMMIT ELEVATION: 3000 FT (915M) ADVISORY NUMBER: 2003/418 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. UPPER AIR SOUNDING. ERUPTION DETAILS: CONTINUED EMISSION OF GASES AND ASH. OBS ASH DATE/TIME: 17/0245Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL040 MOVING NW 10 KNOTS. FL050/FL070 MOVING N 10-15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: ASH IS TOO THIN TO SEE IN MULTISPECTRAL OR INFRARED SATELLITE IMAGERY THROUGH 0245Z. NO HOTSPOT HAS BEEN SEEN IN RECENT HOURS. THERE IS SOME UNCERTAINTY ABOUT WIND DIRECTION BUT INFORMATION IS CONSISTENT THAT WINDS TO FL070 ARE LESS THAN 15 KNOTS. NEXT ADVISORY: WILL BE ISSUED BY 2003APR17/0930Z NNNN