FVXX21 KWBC 201455
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1455 UTC 20 DEC 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-271         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 VISIBLE...INFRARED...AND
MULTISPECTRAL IMAGERY...20/0600 UTC AVIATION MODEL WIND FORECAST.
UPPER AIR DATA FROM THE GEOPHYSICAL INSTITUTE IN QUITO.
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ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM.
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DETAILS OF ASH: THE GEOPHYSICAL INSTITUTE REPORTED A SMALL EXPLOSION
AROUND 1300 UTC.THE LATEST GOES-8 SATELLITE IMAGERY AT 1415 UTC
SHOWS AN AREA OF ASH CENTERED AT 1.72S 78.26W. THE ASH IS 33KM
(18NMI) FROM THE SUMMIT MOVING SOUTHWARD.  
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TRAJECTORY: ASH IS MOVING TO THE SOUTH AT 13 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  
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 20/2100 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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BROWN/CLARK/HUGHES
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NNNN
"Attached Graphic Map Depicting Ash" 

"Graphic Map Depicting Ash"