FVXX21 KWBC 211300  
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1300 UTC 21 APR 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-469         ECUADOR 0128S 7826W 
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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.  6 HOUR WIND FORECAST FROM THE 21/0600
UTC AVIATION MODEL.  THE GEOPHYSICAL INSTITUTE IN QUITO.
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ERUPTION DETAILS: OCCASIONAL ASH EMISSIONS.
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DETAILS OF ASH: GOES-8 IMAGERY THROUGH 21/1215 UTC CONTINUES
TO SHOW EXTENSIVE CLOUDINESS OVER THE AREA MAKING ASH
DETECTION DIFFICULT.  THE LAST REPORT OF ASH WAS AT 21/0303
UTC WHEN THE GEOPHYSICAL INSTITUTE REPORTED ASH OVER THE
VOLCANO...HOWEVER NO HEIGHT WAS GIVEN.
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TRAJECTORY: ANY ASH UP TO FL300 WOULD MOVE WEST OR SOUTHWEST
AT ABOUT 20 KNOTS.
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THE NEXT STATEMENT WILL BE ISSUED BY 21/1900 UTC.
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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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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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RUMINSKI
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