FVXX20 KWBC 120335 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0335 UTC 12 JAN 1999 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 99-006 WEST INDIES 16.72N 62.18W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000 FT (915 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. 0000 UTC GUADELOUPE SOUNDING. MONTSERRAT VOLCANO OBSERVATORY REPORT. . ERUPTION DETAILS: ERUPTED 11/2033 UTC. . DETAILS OF ASH CLOUD: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY THROUGH 0315 UTC DOES NOT SHOW A DISCERNABLE ASH CLOUD. THE PREVIOUS ASH HAS MOVED TO THE WEST TO THE WESTERN EDGE OF THE PIARCO FIR AND IS NO LONGER DETECTED BY SATELLITE. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN FL100 AND FL150 WOULD MOVE WEST SOUTHWEST AT 15 KNOTS WHILE ASH AT AND BELOW FL100 WOULD MOVE WEST AT 15 KNOTS. . 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 LATEST SIGMETS. . THIS WILL BE THE LAST MESSAGE ISSUED FOR THIS EVENT. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN