FVXX20 KWBC 081645 . VOLCANIC ASH ADVISORY STATEMENT - COR ISSUED 1645 UTC 08 APR 1999 BY THE WASHINGTON VAAC CORRECTED FOR TRAJECTORY . SOUFRIERE HILLS 99-098 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. MONSERRAT VOLCANO OBSERVATORY. PIARCO MWO (THANKS FOR COORDINATION). . ERUPTION DETAILS: INITIAL ERUPTION AT 08/0204 UTC. ADDITIONAL ERUPTION AT 08/1400 UTC. . DETAILS OF ASH CLOUD: UNDISCERNIBLE ON SATELLITE IMAGERY DUE TO EXCESSIVE CLOUD COVER. MVO INDICATED 1400 UTC ERUPTION WAS SMALL AND IT WAS UNLIKELY ASH EXCEEDED FL100. . TRAJECTORY: UPPER AIR SOUNDING DATA FROM TFFR/78897 IN ERROR. PIARCO MWO INDICATES ASH FROM SFC TO FL100 WOULD MOVE TOWARDS THE WEST AND WEST NORTHWEST AT 10 TO 20 KTS. ASH BETWEEN FL100 AND FL150 WOULD MOVE TOWARDS THE NORTHWEST AT 15 TO 25 KTS. ASH BETWEEN FL150 AND FL200 WOULD MOVE TOWARDS THE NORTHEAST AT 20 TO 30 KTS. ASH ABOVE FL200 WOULD MOVE TOWARDS THE NORTHEAST AT 40 TO 60 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 08/2300 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN