FVXX22 KWBC 071920
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1920 UTC 07 JULY 1999 BY THE WASHINGTON VAAC 
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SOUFRIERE HILLS 99-169    WEST INDIES 16.7N 62.2W  
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BACKGROUND:    SOUFRIERE HILLS MONTSERRAT (1600-05)
               SUMMIT HEIGHT 3000FT (915M)
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SOURCES OF INFORMATION: MONTSERRAT VOLCANO OBSERVATORY (MVO)..GOES-8
VISIBLE AND INFRARED IMAGERY..1200 UTC GUADELOUPE SOUNDING
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ERUPTION DETAILS: MONTSERRAT VOLCANO OBSERVATORY REPORTS A DOME
COLLAPSE OF THE SOUFRIERE HILLS VOLCANO AT 1755 UTC.
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DETAILS OF ASH CLOUD: HEIGHT ESTIMATE OF THE ASH FROM THE MVO AND
GOES SATELLITE IMAGERY IS TO FL070 TO FL080. AS OF 1845 UTC ASH
EXTENDS 50 KM (27 NMI) WEST FROM THE SUMMIT TO 16.7N 62.7W AND
RANGES FROM 10 KM (5 NMI) WIDE NEAR THE SUMMIT TO 35 KM (19 NMI)
WIDE AT THE WESTERN EDGE OF THE ASH CLOUD.
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TRAJECTORY: UPPER AIR DATA SUGGEST THAT ASH FROM FL050 TO FL100
WOULD MOVE TOWARD THE WEST AT 20 TO 25 KTS. 
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REAL TIME SATELLITE IMAGERY ALONG WITH 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/washington.html
(all lower case except /VAAC/)
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OUTLOOK:  SEE SIGMETS.
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THE NEXT MESSAGE WILL BE ISSUED BY 08/0130 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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"Attached Graphic Map Depicting Ash" 

"Graphic Map Depicting Ash"