FVXX20 KWBC 282330 VOLCANIC ASH ADVISORY ISSUED 2330 UTC 28 SEP 2000 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 00-263 WEST INDIES 1643N 6211W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000 FT (915M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. UPPER AIR FORECAST FROM THE AVIATION MODEL. . ERUPTION DETAILS: LOW LEVEL ASH EMISSIONS. . DETAILS OF ASH CLOUD: SATELLITE IMAGERY THROUGH 28/2245 UTC SHOWS EXTENSIVE CLOUDS OVER THE VOLCANO MAKING DETECTION OF ASH IMPOSSIBLE. . TRAJECTORY: ANY ASH AT FL060 WILL MOVE TOWARDS THE NORTH-NORTHWEST AT 5 TO 10 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUE BY 29/0530 UTC. . REAL TIME SATELLITE IMAGERY AND VOLCANIC ASH ADVISORIES OFTEN ACCOMPANIED BY A MAP DEPICTING ASH LOCATION ARE AVAILABLE AT INTERNET URL ADDRESS HTTP://WWW.SSD.NOAA.GOV/VAAC/WASHINGTON.HTML (ALL LOWER CASE EXCEPT /VAAC/) . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . WALTER . NNNN