FVXX20 KWBC 280230 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0230 UTC 28 JULY 1999 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 99-187 WEST INDIES 16.7N 62.2W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000 FT (915M) . SOURCES OF INFORMATION: MONTSERRAT VOLCANO OBSERVATORY ERUPTION DETAILS: ERUPTION OCCURRED AT ABOUT 28/0220 UTC. . DETAILS OF ASH CLOUD: THE MONTSERRAT VOLCANO OBSERVATORY REPORTED THAT THE SOUFRIERE HILLS VOLCANO ERUPTED AROUND 0220 UTC. THE HEIGHT OF THE ERUPTING COLUMN WAS ESTIMATED AT FL150. . TRAJECTORY: ASH AT FL150 AND BELOW WOULD MOVE GENERALLY WEST AT 15 TO 20 KNOTS. . REAL TIME SATELLITE IMAGERY ALONG WITH 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/washington.html (all lower case except /VAAC/) . OUTLOOK: SEE LATEST SIGMETS AND VAFTAD. . THE NEXT MESSAGE WILL FOLLOW AS SOON AS SATELLITE DATA BECOMES AVAILABLE. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN