FVXX23 KWBC 121720
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1720 UTC 12 NOV 1999 BY THE WASHINGTON VAAC
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COLIMA 99-064 MEXICO 19.51N 103.62W 
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BACKGROUND:    COLIMA MEXICO (1401-04)
               SUMMIT HEIGHT 13451 FT (4100 M)
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SOURCES OF INFORMATION: MEXICO CITY METEOROLOGICAL WATCH
OFFICE...COLIMA TOWER...GOES-8 VISIBLE SATELLITE IMAGERY...12 UTC
GUADALAJARA UPPER AIR SOUNDING
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ERUPTION DETAILS: ERUPTION OCCURRED AT 12/1637 UTC.
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DETAILS OF ASH CLOUD: THE COLIMA TOWER REPORTED AN ERUPTION WITH AN
ESTIMATED HEIGHT TO FL200 AND ASH MOVING TOWARD THE WEST. GOES-8
VISIBLE IMAGERY SHOWS ONLY A FAINT ASH CLOUD INDICATIVE OF A SHORT
DURATION ERUPTION WITH A SMALL AMOUNT OF ASH MOVING TOWARD THE WEST.
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TRAJECTORY: UPPER AIR PATTERNS INDICATE THAT ASH BELOW FL170 WOULD
MOVE TO THE WEST OR NORTHWEST AT 5 TO 15 KNOTS. ANY ASH AT FL200
WOULD MOVE TOWARD THE NORTHEAST AT 10 TO 20 KNOTS. ASH BETWEEN FL170
AND FL200 WOULD MOVE IN A VARIABLE DIRECTION AT A SLOW SPEED.
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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  
http://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 SENT BY 12/2330 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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RUMINSKI
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