FVXX20 KWBC 250730 VOLCANIC ASH ADVISORY ISSUED: 2001FEB25/0730Z VAAC: WASHINGTON . VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: 1643N 6211W AREA: CARIBBEAN . ADVISORY NUMBER: 2001/122 INFORMATION SOURCE: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. MONTSERRAT VOLCANO OBSERVATORY. 0000Z GUADELOUPE UPPER AIR SOUNDING. . ERUPTION DETAILS: CONTINUAL ROCKFALLS PRODUCING A STEADY LOW LEVEL ASH PLUME. . DETAILS OF ASH CLOUD: SATELLITE IMAGERY THROUGH 0645Z DOES NOT SHOW ANY ASH BUT THE LAST VISIBLE IMAGERY OF THE DAY SHOWED A WELL DEFINED LOW LEVEL PLUME MOVING TOWARD THE WEST. . TRAJECTORY: ANY ASH UP TO FL100 WOULD MOVE TOWARD THE WEST AT 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 25/1330Z. . 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