FVXX22 KWBC 221900 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 1900 UTC 22 OCTOBER 1999 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 99-230 WEST INDIES 16.72N 62.18W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000 FT (915M) . SOURCES OF INFORMATION: MONTSERRAT VOLCANO OBSERVATORY (MVO)...GUADELOUPE UPPER AIR SOUNDING AND GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. . ERUPTION DETAILS: MVO REPORTS ERUPTION OCCURRED AT 21/2350 UTC. . DETAILS OF ASH CLOUD: THE MONTSERRAT VOLCANO OBSERVATORY REPORTED AN ERUPTION OF SOUFRIERE HILLS AT 21/2350 UTC. RAINFALL ASSOCIATED WITH TROPICAL STORM JOSE HAS RESULTED IN A COLLAPSE OF THE DOME WITH SUBSEQUENT ASH VENTING. THE GUADELOUPE UPPER AIR SOUNDING SUGGESTED THAT NORTHWARD MOVING ASH COULD REACHED FL150. THE OBSERVATORY INDICATED THAT ADDITIONAL DOME COLLAPSES MAY OCCUR. CURRENTLY..22/1815 UTC..THE AREA IS COVERED WITH DENSE CLOUDINESS MAKING DETECTION OF ANY VOLCANIC ASH IMPOSSIBLE. . TRAJECTORY: ANY ASH AT FL100/FL150 WOULD MOVE NORTH TO NORTHWEST 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 http://www.ssd.noaa.gov/VAAC/washington.html (all lower case except /VAAC/) . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED AROUND 22/0100 UTC. . BROWN/NOAA/NESDIS/SAB . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN