FVXX20 KWBC 080000 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0000 UTC 08 MAR 1999 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 99-038 WEST INDIES 16.7N 62.2W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000FT (915M) . SOURCES OF INFORMATION: MONTSERRAT VOLCANO OBSERVATORY...1200 UTC UPPER AIR REPORT FROM GUADELOUPE...GOES-8 INFRARED AND MULTISPECTRAL IMAGERY...PILOT REPORT . ERUPTION DETAILS: THE MONTSERRAT VOLCANO OBSERVATORY REPORTED AN EXPLOSIVE EVENT OCCURRED AT APPROXIMATELY 07/1635 UTC. . DETAILS OF ASH CLOUD: SATELLITE IMAGERY THROUGH 2345 UTC DOES NOT SHOW ANY DEFINITE ASH SIGNATURES ALTHOUGH WITH EXTENSIVE METEOROLOGICAL CLOUDS IN THE VICINITY THERE STILL MAY BE ASH PRESENT. . TRAJECTORY: TOWARD THE WEST AT 10 KTS AT FL100 BUT TOWARD THE SOUTHEAST AT 15 KTS AT FL250. . 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/messages.html (all lower case except /VAAC/) . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT MESSAGE WILL BE ISSUED BY 08/0600 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN