FVXX21 KWBC 132100
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 2100 UTC 13 APR 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-438        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 UPPER WIND FORECAST FROM
THE 1200 UTC AVIATION MODEL. 
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ERUPTION DETAILS: NEARLY CONTINUOUS GAS EMISSIONS WITH
OCCASIONAL ASH EMISSIONS.
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DETAILS OF ASH:  SATELLITE IMAGERY THROUGH 2015 UTC SHOWS
THUNDERSTORM ACTIVITY IN THE VICINITY OF THE VOLCANO. THE
CLOUDS ASSOCIATED WITH THE THUNDERSTORMS MAKE IT DIFFICULT TO
DETECT ANY ASH. THE VOLCANO REMAINS UNSTABLE. THE GEOPHYSICAL
INSTITUTE REPORTS OCCASIONAL EMISSIONS TO FL250. 
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TRAJECTORY: ASH BETWEEN THE SUMMIT AND FL250 WOULD MOVE TOWARD
THE SOUTHWEST AT 5 TO 10 KTS. 

OUTLOOK: SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 14/0300 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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CLARK
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