FVXX21 KWBC 071100
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VOLCANIC ASH ADVISORY
ISSUED 1100 UTC 07 NOVEMBER 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-084     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
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ERUPTION DETAILS: THE INSTITUTO GEOFISICO REPORTS A NEARLY
CONTINUOUS EMISSION OF STEAM AND ASH NEAR THE SUMMIT AND STRONG
SEISMIC ACTIVITY.
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DETAILS OF ASH: SATELLITE IMAGERY THROUGH 1015 UTC SUGGESTED THE
POSSIBILITY OF A VERY NARROW PLUME EXTENDING FROM THE SUMMIT TO 
POINT 1.6S78.3W...NEARLY 20 KM (11 NMI) TO THE SOUTHEAST OF THE
SUMMIT.  THE PLUME WAS 10 KM (5 NMI) WIDE.  A HOT SPOT IS ALSO SEEN
IN NEAR INFRARED SATELLITE IMAGERY. THE HEIGHT OF THE ASH IS
ESTIMATED TO BE FL300.
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TRAJECTORY: UPPER AIR WIND DATA SUGGESTS ANY ASH BETWEEN FL200 AND
FL300 WOULD MOVE TOWARDS THE SOUTHEAST AROUND 5 KTS.

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 STATEMENT WILL BE ISSUED AROUND 07/1700 UTC OR SOONER IF
CONDITIONS WARRANT.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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TURK
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