FVXX20 KWBC 152355   
VOLCANIC ASH ADVISORY
ISSUED 2355 UTC 15 SEP 2000 BY THE WASHINGTON VAAC
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SOUFRIERE HILLS 00-236    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: VISIBLE...INFRARED AND MULTISPECTRAL
SATELLITE IMAGERY. UPPER LEVEL WIND DATA FROM THE 15/1200 UTC
GUADELOUPE SOUNDING. VOLCANO OBSERVATORY REPORT. 
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ERUPTION DETAILS: CONTINUED ROCKFALLS AND SMALL PYROCLASTIC
FLOWS. 
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DETAILS OF ASH CLOUD: IN THE LAST VISIBLE SATELLITE IMAGERY
THROUGH 15/2145 UTC A FAINT LOW LEVEL PLUME OF ASH AND STEAM
ESTIMATED AT FL100 EXTENDED WEST NORTHWEST (295 DEGREES)  FROM
THE VOLCANO OUT AROUND 60 KM (32NMI) TO POINT 1654N 6239W AND
WAS ROUGHLY 6 KM (3 NMI) WIDE. A HOT SPOT WAS ALSO NOTED IN
IMAGERY STARTING AROUND 15/2130 UTC. FAINT LOW LEVEL ASH IS
HARD TO DETECT IN IMAGERY OVERNIGHT BUT IS LIKELY STILL
PRESENT AS THE OBSERVATORY REPORTED A STRONG ROCKFALL AND
SMALL PYROCLASTIC FLOW AROUND 2130 UTC. 
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TRAJECTORY: ASH AT OR BELOW FL100 IS EXPECTED TO MOVE WEST
NORTHWEST AROUND 20 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT ADVISORY WILL BE ISSUED BY 16/0600 UTC.
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REAL TIME SATELLITE IMAGERY AND 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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