FVXX20 KWBC 230100 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0100 UTC 23 May 1999 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 99-136 WEST INDIES 16.7N 62.2W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000FT (915M) . SOURCES OF INFORMATION: GOES 8 INFRARED MULTISPECTRAL SATELLITE IMAGERY...1200 UTC GUADELOUPE SOUNDING...MONTSERRAT VOLCANO OBSERVATORY REPORT . ERUPTION DETAILS: ERUPTION AT 22/1730 UTC TO FL070. . DETAILS OF ASH CLOUD: THE LATEST GOES-8 SATELLITE IMAGERY DOES NOT SHOW ANY ASH. THE LAST USEABLE VISIBLE IMAGE AT 2115 UTC SHOWED A FAINT INDISTINCT AREA OF ASH 40-60 NMI WEST OF THE VOLCANO. . TRAJECTORY: MOVEMENT WAS TOWARD THE WEST AT 15KT. . 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 IS THE LAST IMAGE ON THIS EVENT. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN