FVXX20 KWBC 082300 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 2300 UTC 08 APR 1999 BY THE WASHINGTON VAAC CORRECTED FOR TRAJECTORY . SOUFRIERE HILLS 99-099 WEST INDIES 16.72N 62.18W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000 FT (915 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL SATELLITE IMAGERY. MONTSERRAT VOLCANO OBSERVATORY. PIARCO MWO. . ERUPTION DETAILS: INITIAL ERUPTION AT 08/0204 UTC. ADDITIONAL ERUPTION AT 08/1400 UTC. . DETAILS OF ASH CLOUD: UNALE TO DETECT ANY ASH IN THE LATEST SATELLITE IMAGERY AT 2215 UTC BECAUSE OF HIGH LEVEL METEOROLOGICAL CLOUDS IN THE VICINITY OF THE VOLCANO. . TRAJECTORY: 1200 UTC UPPER AIR SOUNDING INDICATED ASH BELOW FL120 WOULD MOVE W TO WNW AT 15 TO 20 KTS. . 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 AROUND 09/0500 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN