FVXX20 KWBC 030430 VOLCANIC ASH ADVISORY ISSUED: 2001MAR03/0430Z VAAC: WASHINGTON . VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: 1643N 6211W AREA: CARIBBEAN . ADVISORY NUMBER: 2001/146 INFORMATION SOURCE: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. WIND FORECAST FROM THE AVIATION MODEL. ERUPTION DETAILS: OCCASIONAL ROCKFALLS PRODUCING LOW LEVEL ASH ALONG WITH STEAM AND GASES. . DETAILS OF ASH CLOUD: NO ASH OR HOTSPOTS ARE SEEN IN IMAGERY THROUGH 03/0402Z. HOWEVER THIN LOW LEVEL ASH IS GENERALLY DIFFICULT TO DETECT AT NIGHT SO ASH MIGHT AGAIN BE SEEN AFTER DAYLIGHT. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BELOW FL100 WOULD MOVE TOWARD THE WEST AT ABOUT 15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 03/1030Z. . 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