FVXX20 KWBC 152030
.
VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 2030 UTC 15 JAN 1999 BY THE WASHINGTON VAAC
.
SOUFRIERE HILLS 99-018    WEST INDIES 16.72N 62.18W  
.
BACKGROUND:    SOUFRIERE HILLS MONTSERRAT (1600-05)
               SUMMIT HEIGHT 3000 FT (915 M)
.
SOURCES OF INFORMATION: GOES-8 VISIBLE ... INFRARED...AND MULTISPECTRAL
IMAGERY. MONTSERRAT VOLCANO OBSERVATORY. 1200 UTC GUADELOUPE UPPER AIR
SOUNDING.
.
ERUPTION DETAILS: ERUPTION OCCURRED APPROXIMATELY 15/1230 UTC.
.
DETAILS OF ASH CLOUD: GOES8 IMAGERY THROUGH 15/1915 UTC INDICATES ASH
BELOW FL100 MOVING TO THE WEST NORTHWEST OF SOUFRIERE HILLS. AT 1915
UTC THE LEADING EDGE OF THE PLUME IS AT 17.3N 63.6W WHICH IS 170 KM (90 
NMI) FROM THE VOLCANO. THE ASH PLUME IS 20 KM (10 NMI) WIDE. THE ASH
PLUME OBSERVED EARLIER EAST OF THE VOLCANO AT FL250 IS NO LONGER
DISCERNIBLE IN SATELLITE IMAGERY.
.
TRAJECTORY: UPPER AIR PATTERNS SUGGEST ASH UP TO FL100 WOULD MOVE WEST
NORTHWEST AT 15 TO 20 KT. ASH AROUND FL250 WOULD MOVE EAST AT 15 TO 20
KT. 
.
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 AND VAFTADS.
.
THE NEXT MESSAGE WILL BE ISSUED BY 16/0230 UTC.
.
PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
.
NNNN"Attached Graphic Map Depicting Ash" 

"Graphic Map Depicting Ash"