FVXX20 KWBC 040025 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0025 UTC 04 JULY 1999 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 99-164 WEST INDIES 16.72N 62.18W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000 FT (915 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED...AND MULTISPECTRAL IMAGERY. 1200 UTC GUADELOUPE UPPER AIR SOUNDING. . ERUPTION DETAILS: ERUPTION AT APPROXIMATELY 03/1730 UTC. . DETAILS OF ASH CLOUD: THE ASH CLOUD FROM THIS AFTERNOONS LOW LEVEL ERUPTION MOVED SOUTHWEST AROUND 250 KM (134 NMI) AWAY FROM THE ISLAND AND BECAME TO DIFFUSE TO BE TRACK AROUND 03/2200 UTC. THERE HAVE BEEN NO FURTHER REPORTS. WE WILL CONTINUE TO MONITOR THE AREA. . TRAJECTORY: N/A. . REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC ASH ADVISORY STATEMENTS OFTEN ACCOMPANIED BY A MAP DEPICTING ASH LOCATION ARE AVAILABLE AT INTERNET URL ADDRESS www.ssd.noaa.gov/VAAC/washington.html (all lower case except /VAAC/) . OUTLOOK: SEE LATEST SIGMETS. . THIS WILL BE THE LAST STATEMENT FOR THIS EVENT. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN