FVXX20 KWBC 202200 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 2200 UTC 20 May 1999 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 99-130 WEST INDIES 16.7N 62.2W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000FT (915M) . SOURCES OF INFORMATION: MONTSERRAT VOLCANO OBSERVATORY . ERUPTION DETAILS: ERUPTION AT 20/2140 UTC . DETAILS OF ASH CLOUD: THE MONTSERRAT VOLCANO OBSERVATORY REPORTED AN ERUPTION OF SOUFRIERE HILLS AT 2140 UTC TO BETWEEN FL150 AND FL200. SATELLITE IMAGERY IS NOT YET AVAILABLE TO ANALYZE THIS EVENT. . TRAJECTORY: THE OBSERVATORY INDICATED THAT ASH WAS MOVING TO THE NORTHWEST. . 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 SENT WITHIN THE HOUR. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN