FVXX21 KWBC 231400
VOLCANIC ASH ADVISORY
ISSUED 1400 UTC 23 JUL 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-861         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 AND INFRARED AND
MULTISPECTRAL IMAGERY. UPPER AIR FORECAST FROM THE AVIATION
MODEL.  SIGMET FROM GUAYAQUIL MWO. 
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ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM.
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DETAILS OF ASH: SATELLITE IMAGERY THROUGH 23/1345 UTC SHOWS
DENSE CLOUDINESS OVER THE VOLCANO MAKING ANY DETECTION OF ASH
DIFFICULT.  AN AIRCRAFT OBSERVATION REPORTS ASH OVER THE
VOLCANO AT NEAR SUMMIT LEVEL.
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TRAJECTORY: ANY ASH FROM THE SUMMIT TO FL200 WOULD MOVE TO THE 
WEST AT 10 TO 20 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 23/2000 UTC.
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REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC
ASH ADVISORIES 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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