FVXX20 KWBC 070830 VOLCANIC ASH ADVISORY ISSUED: 2000DEC07/0830Z VAAC: WASHINGTON . VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: 1643N 6211W AREA: CARIBBEAN . SUMMIT ELEVATION: 3000 FT (915 M) . ADVISORY NUMBER: 2000/318 INFORMATION SOURCE: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. 00Z GUADELOUPE UPPER AIR SOUNDING. . ERUPTION DETAILS: ROCKFALLS . DETAILS OF ASH CLOUD: SATELLITE IMAGERY THROUGH 0802Z SHOWS SUBSTANTIAL CLOUDINESS COVERING MUCH OF MONTSERRAT AND THE SURROUNDING AREA. IN THE BREAKS BETWEEN CLOUDS NO ASH CAN BE DETECTED. HOWEVER LOW LEVEL PLUMES ARE SELDOM SEEN IN INFRARED OR MULTISPECTRAL IMAGERY. THE LAST OBSERVATION OF ASH WAS AT 1645Z WHEN IT WAS ESTIMATED BETWEEN FL050 AND FL070. . TRAJECTORY: ASH UP TO FL100 WOULD MOVE WEST AT 10 TO 15 KNOTS. OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 07/1430 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. . RUMINSKI . NNNN