FVXX22 KWBC 211400
VOLCANIC ASH ADVISORY STATEMENT...CORRECTION 
ISSUED 1400 UTC 21 MAR 2000 BY THE WASHINGTON VAAC
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SOUFRIERE HILLS 00-039          WEST INDIES 1643N 6211W  
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BACKGROUND:    SOUFRIERE HILLS  MONTSERRAT (1600-05)
               SUMMIT HEIGHT  3000 FT (915M)
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SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND
MULTISPECTRAL IMAGERY. 21/1200 UTC UPPER AIR SOUNDING FROM
GUADELOUPE.  MONTSERRAT VOLCANO OBSERVATORY REPORT.
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ERUPTION DETAILS: MAJOR ERUPTION BEGINNING 20/2340 UTC WITH
ANOTHER ERUPTION STARTING AROUND 21/0530 UTC. 
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DETAILS OF ASH CLOUD: VISIBLE AND MULTISPECTRAL IMAGERY
THROUGH 1245 UTC SHOWS THAT THE HIGH LEVEL AREA OF ASH UP TO
FL300 THAT MOVED TO THE SOUTHEAST OF THE VOLCANO IS NO LONGER
DETECTED. THE MID LEVEL AREA OF ASH AT FL150 IS STILL DETECTED
IN VISIBLE AND MULTISPECTRAL IMAGERY. THE ASH IS BOUNDED BY
THE FOLLOWING POINTS: 1630N 5831W TO 1739N 5656W TO 1642N
5539W TO 1548N 5533W TO 1536N 5645W TO 1614N 5851W TO 1630N
5831W. THE LEADING EDGE OF THIS ASH IS 710 KM (383 NMI) TO THE
EAST OF THE VOLCANO. DENSE CLOUDS IN THE IMMEDIATE VICINITY OF
THE VOLCANO MAKES IT DIFFICULT TO SEE ANY LOW LEVEL ASH.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST ASH TO FL150 WILL MOVE
TO THE EAST AT 20 TO 30 KTS.
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OUTLOOK:  SEE LATEST SIGMETS AND VAFTAD.
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THE NEXT STATEMENT WILL BE ISSUED BY 21/2000 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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KARST
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NNNN"Attached Graphic Map Depicting Ash" 

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