FVXX21 KWBC 091500
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1500 UTC 09 APR 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-421        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 FORECAST FROM THE 09/0600
UTC AVIATION MODEL. GEOPHYSICAL INSTITUTE
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ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS.
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DETAILS OF ASH: SATELLITE IMAGERY THROUGH 1415 UTC SHOWED
EXTENSIVE CLOUD COVER OVER THE VOLCANO AND THE SURROUNDING
VICINITY MAKING THE DETECTION OF ASH BELOW THE CLOUD DECK
IMPOSSIBLE. 
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 THE LAST INDICATION OF ASH CAME FROM A 1030 UTC GEOPHYSICAL
REPORT OF A PROBABLE VOLCANIC ASH CLOUD OVER THE VOLCANO
MOVING TOWARDS THE SOUTH AND SOUTHWEST.  A HOT SPOT HAD BEEN
NOTED IN NEAR INFRARED SATELLITE IMAGES BETWEEN 0900 UTC AND
1000 UTC. 
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TRAJECTORY: ANY ASH THAT MAY EXIST BETWEEN FL200 AND FL320
WOULD MOVE TOWARDS THE SOUTH AND SOUTHWEST AT 15 TO 20 KNOTS. 
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OUTLOOK: SEE SIGMETS AND VAFTAD.
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THE NEXT STATEMENT WILL BE ISSUED BY 09/2100 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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TURK
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