FVXX20 KWBC 241700 VOLCANIC ASH ADVISORY ISSUED 1645 UTC 24 SEP 2000 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 00-258 WEST INDIES 1643N 6211W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000 FT (915M) . SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED...AND MULTISPECTRAL IMAGERY. 24/1200 UTC GUADELOUPE RADIOSONDE. . ERUPTION DETAILS: LOW LEVEL ASH EMISSIONS. . DETAILS OF ASH CLOUD: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 1632 UTC ALTHOUGH THERE ARE WEATHER CLOUDS IN THE VICINITY OF THE VOLCANO AND THE HIGH SUN ANGLE MAKING DETECTION DIFFICULT. HOWEVER A HOT SPOT CAN BE SEEN AT THE VOLCANO LOCATION IN SHORTWAVE INFRARED IMAGERY. EARLIER TODAY AN ASH PLUME ESTIMATED AT OR BELOW FL080 COULD BE SEEN EXTENDING FROM THE SUMMIT TOWARD THE WEST. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH UP TO FL080 WOULD MOVE TO THE WEST AT ABOUT 15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 24/2300 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. . NNNN