FVXX20 KWBC 010300
VOLCANIC ASH ADVISORY
ISSUED 0300 UTC 01 JUL 2000 BY THE WASHINGTON VAAC
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SOUFRIERE HILLS 00-107      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 INFRARED AND MULTISPECTRAL
SATELLITE IMAGERY. MONTSERRAT VOLCANO OBSERVATORY. AVIATION
MODEL WINDS.
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ERUPTION DETAILS: INCREASED SEISMIC ACTIVITY... PYROCLASTIC
FLOWS AND ROCKFALLS...
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DETAILS OF ASH CLOUD: THE LOW LEVEL VOLCANIC ASH PLUME FROM
SOUFRIERE HILLS DOES NOT SHOW UP IN INFRARED AND MULTISPECTRAL
SATELLITE IMAGERY THROUGH 01/0215 UTC. HOWEVER THE LAST
VISIBLE IMAGE AT 30/2215 UTC SHOWED A NARROW PLUME OF ASH
MOVING TO THE NORTHWEST OF THE VOLCANO. THE PLUME AT THAT TIME
WAS ESTIMATED AT FL100. THE MONTSERRAT VOLCANO OBSERVATORY
REPORTED INCREASED SEISMIC ACTIVITY AND ROCKFALLS.
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TRAJECTORY: ASH UP TO FL100 IS MOVING TO THE NORTHWEST AT 20
TO 25 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT MESSAGE WILL BE ISSUED BY 01/0900 UTC. 
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REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC
ASH ADVISORIES OFTEN ACCOMPANIED BY A MAP DEPICTING ASH
LOCATION ARE AVAILABLE AT INTERNET URL ADDRESS  
http://www.ssd.noaa.gov/VAAC/washington.html
(all lower case except /VAAC/)
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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KARST
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