FVXX21 KWBC 171800
VOLCANIC ASH ADVISORY
ISSUED 1800 UTC 17 JUL 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-834         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.  GEOPHYSICAL INSTITUTE REPORT.
6 HOUR WIND FORECAST FROM THE 17/1200 UTC AVIATION MODEL.
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ERUPTION DETAILS: GASES WITH OCCASIONAL ASH EMISSIONS.  
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DETAILS OF ASH: WITH CLEAR SKIES OVER THE SUMMIT..ASH IS NOT
DETECTED ON THE SATELLITE IMAGERY THROUGH 17/1745 UTC.  THE
LAST REPORT OF ASH BY THE GEOPHYSICAL INSTITUTE WAS AT WAS
OVER 24 HOURS AGO AT 16/1659 UTC WITH ASH TO FL280.
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TRAJECTORY: ANY ASH FROM THE SUMMIT TO FL280 WOULD MOVE WEST
AT 15-20 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT MESSAGE WILL BE ISSUED BY 18/0000 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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WALTER
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