FVXX20 KWBC 121853 VOLCANIC ASH ADVISORY ISSUED: 2001FEB12/1853Z VAAC: WASHINGTON . VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: 1643N 6211W AREA: CARIBBEAN . SUMMIT ELEVATION: 3000 FT (915 M) . ADVISORY NUMBER: 2001/95 . INFORMATION SOURCE: GOES-8 VISIBLE...INFRARED AND MULTISPECTRAL IMAGERY. 1200Z UPPER AIR SOUNDING FROM GUADELOUPE. . ERUPTION DETAILS: ROCKFALLS PRODUCING ASH. . DETAILS OF ASH CLOUD: GOES-8 VISIBLE IMAGERY AT 1815Z SHOWS LOW LEVEL WEATHER CLOUDS IN THE VICINITY OF MONTSERRAT WHICH MAKES THE DETECTION OF ASH DIFFICULT. ASH OBSERVED THIS MORNING WAS ESTIMATED TO BE BELOW FL070 . TRAJECTORY: ANY ASH BELOW FL070 WOULD MOVE TOWARD THE WEST AT 20 TO 25 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 13/0100Z. . 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. . BROWN . NNNN