FVXX21 KWBC 200800
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0800 UTC 20 NOV 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-143         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 INFRARED AND MULTISPECTRAL IMAGERY.
UPPER-AIR DATA AND REPORTS FROM THE GEOFISICO INSTITUTO.  GUAYAQUIL
METEOROLOGICAL WATCH OFFICE. AVIATION MODEL UPPER AIR WIND DATA.
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ERUPTION DETAILS: CONTINUOUS STEAM AND ASH EMISSIONS.
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DETAILS OF ASH: ASH DESCRIBED IN PREVIOUS STATEMENT NOT VISIBLE IN
CURRENT SATELLITE IMAGERY THROUGH 20/0715 UTC.
LATEST SATELLITE IMAGERY AT 20/0715 UTC SHOWS A SMALL ASH PLUME
EXTENDING TOWARD THE WEST-SOUTHWEST AWAY FROM THE SUMMIT.  THE PLUME
IS 34KM IN LENGTH 10KM WIDE AND EXTENDS TO THE POINT 1.6S/78.7W. 
THE PLUME IS ESTIMATED TO BE BETWEEN FL300 AND FL350.
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TRAJECTORY: ASH BETWEEN FL300 AND FL350 WOULD MOVE TOWARD THE
WEST-SOUTHWEST AT 5-10KT.
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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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THE NEXT STATEMENT WILL BE ISSUED BY 20/1400 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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WALTER/SAB/NOAA/NESDIS
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"Attached Graphic Map Depicting Ash" 

"Graphic Map Depicting Ash"