FVXX21 KWBC 220800
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VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 0800 UTC 22 OCTOBER 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-016       ECUADOR 1.47S 78.44W 
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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
...GEOPHYSICAL INSTITUTE...U.S. NATIONAL WEATHER SERVICE NUMERICAL
WEATHER PREDICTION MODELS 
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ERUPTION DETAILS: CONTINUOUS VENTING OF ASH AND STEAM
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DETAILS OF ASH: THE GEOPHYSICAL INSTITUTE IN ITS DAILY REPORT ON THE
VOLCANO INDICATED A CONTINUOUS VENTING OF ASH AND GASES.  SEISMIC
ACTIVITY HAS ALSO BEEN CONTINUOUS AT HIGH LEVELS.  BASED ON THIS
INFORMATION FROM THE GEOPHYSICAL INSTITUTE AN ASH PLUME BETWEEN
FL180 AND FL200 IS ASSUMED TO BE PRESENT THOUGH UNDETECTABLE IN
SATELLITE IMAGERY THROUGH 0715 UTC.
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TRAJECTORY: NUMERICAL MODEL FORECASTS SUGGEST THAT ANY ASH BETWEEN 
FL180 AND FL250 WOULD MOVE TOWARD THE WEST AT 5-10 KT.
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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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OUTLOOK:  SEE SIGMETS.
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THE NEXT MESSAGE WILL BE ISSUED AROUND 22/1400 UTC.
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WALTER/SAB/NOAA/NESDIS
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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NNNN