FVXX20 KWBC 291630 VOLCANIC ASH ADVISORY ISSUED 1630 UTC 29 SEP 2000 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 00-266 WEST INDIES 1643N 6211W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000 FT (915M) . SOURCES OF INFORMATION: GOES-8 VISIBLE AND INFRARED AND MULTISPECTRAL IMAGERY. UPPER AIR FORECAST FROM THE AVIATION MODEL. . ERUPTION DETAILS: LOW LEVEL ASH EMISSIONS. . DETAILS OF ASH CLOUD: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 29/1615 UTC. A HOTSPOT IS STILL DETECTED IN SHORTWAVE INFRARED IMAGERY INDICATING THAT THE VOLCANO REMAINS ACTIVE. A PLUME AT FL060 WAS EVIDENT IN VISIBLE IMAGERY YESTERDAY. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BELOW FL060 WOULD MOVE TOWARD THE NORTH NORTHWEST AT LESS THAN 10 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUE BY 29/2230 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. . KARST . NNNN