FVXX20 KWBC 250100 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0100 UTC 25 MAR 1999 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 99-063 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 MULTI SPECTRAL IMAGERY. . ERUPTION DETAILS: MONTSERRAT VOLCANO OBSERVATORY REPORTS ASH VENTING AT 24/1715 UTC TO FL200. . DETAILS OF ASH CLOUD: DENSE METEOROLOGICAL CLOUDS COVER THE REGION AROUND THE VOLCANO. IT IS DIFFICULT TO FOLLOW ANY ASH FROM THE EARLIER ERUPTION. . TRAJECTORY: ANY ASH UP TO FL100 WOULD MOVE WEST AT 15 TO 20 KTS WHILE ASH FROM FL100 TO FL200 WOULD MOVE EAST AT 20 TO 30 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. . THIS WILL BE THE LAST MESSAGE FOR THIS ERUPTION. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN