FVXX20 KWBC 041000 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 1000 UTC 04 SEPTEMBER 1999 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 99-208 WEST INDIES 16.7N 62.2W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000 FT (915 M) . SOURCES OF INFORMATION: MONTSERRAT VOLCANO OBSERVATORY. GOES 8 INFRARED AND MULTISPECTRAL IMAGERY. 04/0000 UTC GUADELOUPE SOUNDING. ERUPTION DETAILS: 03/0310 UTC UP TO FL200. . DETAILS OF ASH CLOUD: THE MONTSERRAT VOLCANO OBSERVATORY REPORTED AN ERUPTION OF THE SOUFRIERE HILLS VOLCANO ESTIMATED TO FL200 AT 04/0310 UTC. NO ASH IS OBSERVED ON SATELLITE IMAGERY AT THIS TIME. AT 0715 UTC MULTISPECTRAL IMAGERY INDICATED A POSSIBLE SMALL AREA OF ASH ABOUT 10 NMI IN DIAMETER CENTERED NEAR 12.7N 62.0W OR ABOUT 30 NMI NORTH OF THE VOLCANO DRIFTING TO THE NORTH-NORTHEAST AT 5KT. TRAJECTORY: NORTH-NORTHEAST AT 5KT. . 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 SIGMETS AND VAFTAD . THE NEXT MESSAGE WILL BE ISSUED BY 04/1600 UTC. . . PLEASE REFER TO VAFTAD AND SIGMETS FOR CURRENT WARNINGS. . NNNN