FVXX21 KWBC 210500
VOLCANIC ASH ADVISORY
ISSUED 0500 UTC 21 JUL 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-849         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 INFRARED AND MULTISPECTRAL
IMAGERY. WINDS FORECAST FROM THE AVIATION MODEL. GEOPHYSICAL
INSTITUTE REPORT.
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ERUPTION DETAILS: GASES WITH OCCASIONAL ASH EMISSIONS.  
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DETAILS OF ASH: ASH IS NOT VISIBLE IN THE SATELLITE IMAGERY
THROUGH 21/0415 UTC ALTHOUGH THERE ARE EXTENSIVE CLOUDS IN THE
AREA. 

AS OF 21/0310 UTC THE GEOPHYSICAL INSTITUTE REPORTED ASH OVER
THE VOLCANO MOVING WEST.  NO HEIGHT ESTIMATE WAS GIVEN.
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TRAJECTORY: ASH FROM THE SUMMIT TO FL260 WOULD MOVE TOWARDS
THE SOUTHWEST AT 10-20 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT MESSAGE WILL BE ISSUED BY 21/1100 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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