FVXX22 KWBC 230100 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0100 UTC 23 OCTOBER 1999 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 99-231 WEST INDIES 16.72N 62.18W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000 FT (915M) . SOURCES OF INFORMATION: MONTSERRAT VOLCANO OBSERVATORY AND GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. . ERUPTION DETAILS: ERUPTION OCCURRED AT 21/2350 UTC. . DETAILS OF ASH CLOUD: THE MONTSERRAT VOLCANO OBSERVATORY REPORTED IN THEIR WEEKLY SUMMARY THAT VISUAL OBSERVATIONS OF THE VOLCANO FROM A HELICOPTER ON THE 22ND INDICATED A NEW STEAM VENT IN THE DOME. THIS VENT WAS THE LIKELY SOURCE OF YESTERDAYS ASH VENTING. THERE WAS NO INDICATION OF ASH VENTING DURING THE DAY...ONLY STEAM. EXTENSIVE CLOUDINESS CONTINUED TO COVER THE REGION THROUGH 0045 UTC. . TRAJECTORY: N/A . 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. . THIS WILL BE THE FINAL MESSAGE ISSUED ON THIS EVENT. . TURK/NOAA/NESDIS/SAB . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN