FVXX20 KWBC 151440
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VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 1440 UTC 15 JAN 1999 BY THE WASHINGTON VAAC
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SOUFRIERE HILLS 99-017    WEST INDIES 16.72N 62.18W  
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BACKGROUND:    SOUFRIERE HILLS MONTSERRAT (1600-05)
               SUMMIT HEIGHT 3000 FT (915 M)
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SOURCES OF INFORMATION: GOES-8 VISIBLE ... INFRARED...AND
MULTISPECTRAL IMAGERY. MONTSERRAT VOLCANO OBSERVATORY. 1200 UTC
GUADELOUPE UPPER AIR SOUNDING.
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ERUPTION DETAILS: ERUPTION OCCURRED APPROXIMATELY 15/1230 UTC.
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DETAILS OF ASH CLOUD: GOES8 IMAGERY THROUGH 15/1345 UTC INDICATES ASH
BELOW FL100 TO THE WEST-NORTHWEST OF THE VOLCANO AND ASH AROUND FL250
TO THE EAST OF THE VOLCANO.  THE LOW LEVEL PLUME EXTENDS TO THE POINT
16.9N 62.5W AND IS APPROXIMATELY 17KM(10NMI) WIDE.  THE MIDDLE LEVEL
PLUME(FL250) EXTENDS TO 16.8N 61.9W. AND IS APPROXIMATELY 22KM(12NMI)
WIDE. 
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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. 
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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/)
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OUTLOOK:  SEE LATEST SIGMETS.
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THE NEXT MESSAGE WILL BE ISSUED BY 15/2030 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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NNNN"Attached Graphic Map Depicting Ash" 

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