FVXX21 KWBC 261730
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1730 UTC 26 DEC 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-297         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... 0600 UTC AVIATION MODEL WIND FORECAST...WIND DATA
PROVIDED BY THE OBSERVATORY IN QUITO
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ERUPTION DETAILS: EMISSIONS OF ASH AND STEAM
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DETAILS OF ASH: NO ASH WAS DETECTED ON THE SATELLITE IMAGERY THROUGH
26/1515 UTC.  HOWEVER..SURFACE OBSERVATIONS THIS MORNING INDICATED
VOLCANIC ASH IN THE VICINITY OF THE VOLCANO MOVING TOWARD THE EAST-NORTHEAST.
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TRAJECTORY: ANY ASH BETWEEN FL250 AND FL350 WOULD MOVE NORTH
AT 20-35 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 AND VAFTAD.
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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 26/2330 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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WALTER/STREET/SAB/NOAA/NESDIS
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