FVXX20 KWBC 292253 VOLCANIC ASH ADVISORY ISSUED: 2001JUL29/2253Z VAAC: WASHINGTON . VOLCANO: SOUFRIERE HILLS 1600-05 LOCATION: 1643N 6211W AREA: CARIBBEAN . SUMMIT ELEVATION: 3000 FT (915 M) . ADVISORY NUMBER: 2001/187 . INFORMATION SOURCE: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL SATELLITE IMAGERY. MONTSERRAT VOLCANO OBSERVATORY (MVO). 6 HOUR AVIATION MODEL UPPER LEVEL WIND FORECAST. . ERUPTION DETAILS: INCREASED ASH AND SEISMIC ACTIVITY. 28/0543Z. . DETAILS OF ASH CLOUD: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 29/2215Z DUE TO VERY DENSE CLOUDS ASSOCIATED WITH A TROPICAL WAVE CROSSING THE ISLAND. HOWEVER...THE MVO INDICATES THAT INCREASED LEVELS OF ASH HAVE BEEN COMING FROM THE SUMMIT THIS AFTERNOON ALONG WITH STEADY AND INCREASED SEISMIC ACTIVITY. THE MVO WAS NOT ABLE TO DETERMINE AN ACCURATE HEIGHT OR DIRECTION OF MOVEMENT OF THE ASH DUE TO THE INCLEMENT WEATHER...BUT THEY INDICATED THAT THE ASH WAS AT A LOW LEVEL...LIKELY BELOW FL100. . TRAJECTORY: ANY ASH BELOW FL100 WOULD MOVE TOWARD THE WEST AT ABOUT 30 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 30/0500Z. . 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. . RUMINSKI . NNNN