FVXX21 KWBC 051000
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1000 UTC 05 DEC 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-207        ECUADOR 1.47S 78.44W 
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BACKGROUND:    TUNGURAHUA ECUADOR (1502-08)
               SUMMIT HEIGHT 16480 FT (5023 M)
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SOURCES OF INFORMATION: GOES-8 MULTISPECTRAL AND INFRARED IMAGERY.
UPPER AIR DATA FROM THE GEOPHYSICAL INSTITUTE AND NATIONAL WEATHER
SERVICE MODEL DATA.
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ERUPTION DETAILS: A BRIEF EMISSION OF ASH WAS NOTED IN MULTISPECTRAL
IMAGERY AT AROUND 0700 UTC.         
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DETAILS OF ASH: ASH WAS OBSERVING MOVING TOWARD THE WEST-SOUTHWEST
AT ABOUT 15 KNOTS. HEIGHT WAS ESTIMATED AT FL240.

TRAJECTORY: ANY REMAINING ASH AT FL240 WOULD MOVE TOWARD THE
SOUTHWEST AT 10 TO 15 KNOTS.
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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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EFFECTIVE JANUARY 3 2000 AT 0000 UTC... ALL REFERENCES TO LATITUDE
AND LONGITUDE IN VOLCANIC ASH ADVISORY STATEMENTS WILL BE IN DEGREES
AND MINUTES OF A DEGREE.  EXAMPLE: 16.70N 62.20W  WILL BE 1642N6212W
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THE NEXT STATEMENT WILL BE ISSUED BY 05/1600 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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