FVXX20 KWBC 160100 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0100 UTC 16 MAR 1999 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 99-042 WEST INDIES 16.72N 62.18W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000 FT (915 M) . SOURCES OF INFORMATION: MONTSERRAT VOLCANO OBSERVATORY . ERUPTION DETAILS: EMISSION AT APPROX 16/0040 UTC. . DETAILS OF ASH CLOUD: THE MONTSERRAT VOLCANO OBSERVATORY REPORTED THAT AN ASH-PRODUCING EVENT OCCURRED AT 0040 UTC. WHILE THE OBSERVATORY DID NOT BELIEVE IT WAS A MAJOR ERUPTION THEY COULD NOT DETERMINE THE HEIGHT OF ANY POSSIBLE ASH CLOUD OR THE DIRECTION OF MOTION DUE TO DARKNESS. SATELLITE IMAGERY IS NOT YET AVAILABLE FOR THE TIME OF THE EVENT. . TRAJECTORY: UNKNOWN. . 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 STATEMENT WILL BE ISSUED WITHIN THE HOUR. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN