FVXX20 KWBC 281400 VOLCANIC ASH ADVISORY ISSUED: 2000DEC28/1400Z VAAC: WASHINGTON . VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: 1643N 6211W AREA: CARIBBEAN . SUMMIT ELEVATION: 3000 FT (915 M) . ADVISORY NUMBER: 2000/345 INFORMATION SOURCE: GOES-8 VISIBLE AND INFRARED AND MULTISPECTRAL IMAGERY. 28/1200Z GUADELOUPE UPPER AIR SOUNDING. . ERUPTION DETAILS: HOT SPOT IN SHORTWAVE SATELLITE IMAGERY. . DETAILS OF ASH CLOUD: SATELLITE IMAGERY THROUGH 28/1315Z SHOWS AN OCCASIONAL HOT SPOT IN SHORTWAVE IMAGERY. HOWEVER, THERE IS NO PLUME EVIDENT IN EARLY MORNING VISIBLE IMAGERY. THE VOLCANO REMAINS UNSTABLE AND MAY PRODUCE LOW LEVEL ASH AT ANY TIME. . TRAJECTORY: ANY ASH UP TO FL070 WOULD MOVE TOWARD THE WEST NORTHWEST AT ABOUT 10 TO 15 KTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 28/2000Z. . 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