FVXX21 KWBC 261930
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1930 UTC 26 NOV 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-171        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 AND MULTISPECTRAL AND
INFRARED IMAGERY.  REPORT OF THE GEOFISICO INSTITUTO AND 12Z
AVIATION MODEL WIND FORECAST
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ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS
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DETAILS OF ASH: A NEW NARROW PLUME OF ASH IS EVIDENT IN SATELLITE
IMAGERY THROUGH 1845 UTC. THE ASH IS ESTIMATED UP TO FL250 MOVING
TOWARDS THE SOUTHEAST. THE LEADING EDGE OF THE ASH IS ESTIMATED AT
2.0S 78.3W WHICH IS 57 KM (30 NMI) FROM THE SUMMIT. THE PLUME IS 20
KM (10 NMI) WIDE.  
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN FL200
AND FL250 WILL MOVE TO THE SOUTHEAST AT AROUND 10 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 AND VAFTAD.
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THE NEXT STATEMENT WILL BE ISSUED BY 27/0130 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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NNNN"Attached Graphic Map Depicting Ash" 

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