FVXX20 KWBC 202300
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 2300 UTC 20 MAR 1999 BY THE WASHINGTON VAAC
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SOUFRIERE HILLS 99-049    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 INFRARED AND MULTISPECTRAL IMAGERY
MONTSERRAT VOLCANO OBSERVATORY AND GUADELOUPE SOUNDING.
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ERUPTION DETAILS: ASH PRODUCING EVENT AROUND 20/2145 UTC.
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DETAILS OF ASH CLOUD: THE MONTSERRAT VOLCANO OBSERVATORY REPORTED AN
ASH CLOUD THAT STARTED AROUND 20/2145 UTC.  THE CLOUD WAS DETECTABLE
IN THE 2215 UTC IMAGERY HEADING SOUTH AND EAST SOUTHEAST FROM THE
ISLAND. THE PLUME EXTENDED SOUTH SOUTHEAST (155 DEGREES) 30 KM FROM
THE SUMMIT TO POINT 16.5N 62.0W AND WAS ROUGHLY 26 KM WIDE. DUE TO
THE DIRECTION OF THE PLUME THE ASH IS ESTIMATED BELOW FL200. THIS
HEIGHT WAS CONFIRMED BY THE PILOT REPORT TO THE TRINIDAD WEATHER 
OFFICE.
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TRAJECTORY:  THE GUADELOUPE SOUNDING WOULD PUT ASH BELOW FL100
MOVING SOUTH AROUND 10 KNOTS AND ASH BETWEEN FL100 AND FL200 MOVING
SOUTHEAST AROUND 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
(all lower case except /VAAC/)
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OUTLOOK: SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED AROUND 21/0430.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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"Attached Graphic Map Depicting Ash" 

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