FVXX20 KWBC 200430 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0430 UTC 20 APR 1999 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 99-117 WEST INDIES 16.72N 62.18W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000 FT (915 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. . ERUPTION DETAILS: ASH VENTING APPROX 19/0838 UTC. . DETAILS OF ASH CLOUD: ASH IS NO LONGER VISIBLE ON THE GOES-8 SATELLITE IMAGERY THROUGH 20/0415 UTC. . TRAJECTORY: TOWARD THE WEST AT 10 TO 20 KNOTS. . 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 VAFTAD AND SIGMETS. . THIS WILL BE THE LAST MESSAGE FOR THIS EVENT. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN