FVXX22 KWBC 092325
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 2325 UTC 09 NOV 1999 BY THE WASHINGTON VAAC
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SOUFRIERE HILLS   99-258  WEST INDIES  16.7N 62.2W 
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BACKGROUND:      SOUFRIERE HILLS   MONTSERRAT  (1600-05)
                 SUMMIT HEIGHT  3000 FT  (915 M)
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SOURCES OF INFORMATION:  MONTSERRAT VOLCANO OBSERVATORY...GOES-8
INFRARED AND MULTISPECTRAL IMAGERY...12 UTC AVIATION MODEL UPPER-AIR
SOUNDING DATA.
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ERUPTION DETAILS: INITIAL ERUPTION OCCURRED AT 09/2112 UTC.
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DETAILS OF ASH CLOUD: MULTISPECTRAL SATELLITE IMAGERY THROUGH 2215
UTC SHOWS A NARROW PLUME OF ASH DRIFTING WESTWARD AND DISSIPATING. 
THIS PLUME IS ESTIMATED TO BE UP TO FL100.  A SECOND PLUME IS MOVING
EAST AND MAINTAINING ITS SHAPE.  BASED ON UPPER AIR DATA AND
INFORMATION RECEIVED FROM MVO THIS EASTERLY ASH PLUME IS ESTIMATED
TO BE UP TO FL250.  BOTH PLUMES ARE VERY NARROW AND ARE WITHIN 4 KM
EITHER SIDE OF A LINE FROM 16.71N 61.93W TO 16.69N 62.36W.
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TRAJECTORY: ASH FROM FL030 TO FL100 WEST SOUTHWEST AT ABOUT 10
KNOTS. ASH FROM FL100 TO FL200 SHOULD MOVE EAST AT 10 KNOTS. ASH
FROM FL200 TO FL350 WILL MOVE EAST SOUTHEAST AT UP TO 20 KNOTS.
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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
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OUTLOOK:  SEE SIGMETS.
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THIS NEXT MESSAGE WILL BE ISSUED BY 10/0530 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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