FVXX20 KWBC 280700 VOLCANIC ASH ADVISORY ISSUED: 2001FEB28/0700Z VAAC: WASHINGTON . VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: 1643N 6211W AREA: CARIBBEAN . ADVISORY NUMBER: 2001/134 INFORMATION SOURCE: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. WIND FORECAST FROM THE AVIATION MODEL. ERUPTION DETAILS: OCCASIONAL ROCKFALLS PRODUCING A LOW LEVEL ASH PLUME. . DETAILS OF ASH CLOUD: ASH IS NOT SEEN IN SATELLITE IMAGERY AT 28/0645Z POSSIBLY BECAUSE THIN LOW LEVEL PLUMES ARE DIFFICULT TO SEE AT NIGHT. THE ASH PLUME MIGHT AGAIN BE SEEN AFTER DAYLIGHT WHEN VISIBLE SATELLITE IMAGERY BECOMES AVAILABLE. CURRENT SHORTWAVE INFRARED IMAGERY DOES NOT SHOW A HOTSPOT. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BELOW FL100 WOULD MOVE TOWARDS THE SOUTH AT 10 TO 15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 28/1300Z. . 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