FVXX20 KWBC 080355 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0355 UTC 08 MAY 1999 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 99-125 WEST INDIES 16.72N 62.18W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000 FT (915 M) . SOURCES OF INFORMATION: MONTSERRAT VOLCANO OBSERVATORY...GOES-8 IMAGERY...0000 UTC GUADELOUPE SOUNDING. . ERUPTION DETAILS: ERUPTION AT ABOUT 0315 UTC. . DETAILS OF ASH CLOUD: THE MONTSERRAT VOLCANO OBSERVATORY REPORTS AN ERUPTION WITH ASH THAT THEY ESTIMATE TO BE AT ABOUT FL100. DUE TO FAIRLY DENSE METEOROLOGICAL CLOUDS WE CANNOT SEE THE ASH IN SATELLITE IMAGERY. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH AT ABOUT FL100 WILL MOVE TO THE EAST OR NORTHEAST AT ABOUT 15 KNOTS. AN OBSERVER AT THE VOLCANO OBSERVATORY ALSO THOUGHT THAT THE ASH SEEMED TO BE MOVING EASTWARD. . 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. . THE NEXT MESSAGE WILL BE ISSUED BY 08/1000 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN