FVXX20 KWBC 311830 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 1830 UTC 31 MAY 1999 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 99-144 WEST INDIES 16.72N 62.18W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000 FT (915 M) . SOURCES OF INFORMATION: GOES-8 SATELLITE IMAGERY... 1200 UTC GUADELOUPE SOUNDING...CONFIRMED BY MONTSERRAT VOLCANO OBSERVATORY . ERUPTION DETAILS:ERUPTION WAS OBSERVED FOR 2 HOURS BEGINNING AT 31/1000 UTC . DETAILS OF ASH CLOUD: NO ASH SIGNATURES ARE VISIBLE AT THIS TIME. TRAJECTORY: WEST AT 10KT. . 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. . THIS IS THE LAST STATEMENT ON THIS EVENT . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN