FVXX20 KWBC 280200 VOLCANIC ASH ADVISORY ISSUED: 2000DEC28/0200Z VAAC: WASHINGTON . VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: 1643N 6211W AREA: CARIBBEAN . SUMMIT ELEVATION: 3000 FT (915 M) . ADVISORY NUMBER: 2000/343 INFORMATION SOURCE: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. 28/0000Z GUADELOUPE UPPER AIR SOUNDING. . ERUPTION DETAILS: FAINT ASH PLUME PRODUCED BY ROCKFALLS. . DETAILS OF ASH CLOUD: NO ASH WAS SEEN IN SATELLITE IMAGERY THROUGH 28/0115Z. HOWEVER A FAINT ASH PLUME ESTIMATED BELOW FL070 MOVING TO THE NORTHWEST WAS DETECTED DURING DAYLIGHT HOURS. SUCH FAINT ASH IS USUALLY NOT DETECTABLE IN INFRARED OR MULTISPECTRAL IMAGERY. SHORTWAVE INFRARED IMAGERY SHOWS A PRONOUNCED HOT SPOT OVER THE VOLCANO INDICATING THAT ITS ACTIVITY CONTINUES. . TRAJECTORY: ANY ASH UP TO FL070 WOULD MOVE TOWARD THE NORTHWEST AT ABOUT 5 TO 10 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 28/0800Z. . 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. . CLARK . NNNN