FVXX20 KWBC 211830 VOLCANIC ASH ADVISORY ISSUED: 2001JAN21/1830Z VAAC: WASHINGTON . VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: 1643N 6211W AREA: CARIBBEAN . SUMMIT ELEVATION: 3000 FT (915 M) . ADVISORY NUMBER: 2001/77 INFORMATION SOURCE: GOES-8 VISIBLE AND INFRARED AND MULTISPECTRAL IMAGERY. AVIATION MODEL FORECAST WINDS. . ERUPTION DETAILS: ASH PLUME PRODUCED BY ROCKFALLS. . DETAILS OF ASH CLOUD: THERE IS NO INDICATION OF A LOW LEVEL ASH PLUME MOVING OFF SOUFRIERE HILLS IN SATELLITE IMAGERY. VISIBLE IMAGERY THROUGH 1745Z SHOWS NO PLUME AND THERE HAS BEEN NO HOT SPOT IN SHORT WAVE IMAGERY. . TRAJECTORY: ANY ASH BELOW FL070 WOULD MOVE TOWARD THE WEST AT ABOUT 15 TO 25 KNOTS. . OUTLOOK: SEE SIGMETS. . THIS WILL BE THE LAST MESSAGE FOR THIS EVENT. . 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