FVXX20 KWBC 172000
VOLCANIC ASH ADVISORY
ISSUED 2000 UTC 17 SEP 2000 BY THE WASHINGTON VAAC
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SOUFRIERE HILLS 00-244          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: THE MONTSERRAT VOLCANO OBSERVATORY.
GOES-8 IMAGERY. 17/1200 UTC SOUNDING FROM GUADELOUPE.
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ERUPTION DETAILS: MODERATE EXPLOSION AROUND 17/0340 UTC.
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DETAILS OF ASH CLOUD: THE MVO REPORTED THAT SINCE THE
EXPLOSION THIS MORNING THERE HAS BEEN SO SIGNIFICANT ACTIVITY.
NOTHING CAN BE SEEN ON GOES-8 SATELLITE IMAGERY DUE TO THE
REMNANTS OF TD 12 MOVING WESTWARD THROUGH THE LEEWARD ISLANDS.
THE MVO REPORTS THAT THERE HAS BEEN AT LEAST ONE EXPLOSION PER
DAY AND THESE TYPICALLY OCCUR AT NIGHT. THEREFORE THIS
ADVISORY WILL CONTINUE AS LONG AS THERE IS A CREDIBLE THREAT
TO AVIATION IN THE AREA.  
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH FROM SUMMIT
LEVEL TO FL100 TO MOVE WEST AT 20 TO 30 KNOTS. 
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OUTLOOK: SEE SIGMETS.
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THE NEXT ADVISORY WILL BE ISSUED BY 18/0130 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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BROWN
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