FVXX21 KWBC 250820
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VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 0800 UTC 25 OCTOBER 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-028       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. UPPER AIR SOUNDING NEAR THE VOLCANO.  
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ERUPTION DETAILS: CONTINUOUS VENTING OF ASH AND STEAM.
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DETAILS OF ASH: GOES-8 SATELLITE IMAGERY THROUGH 0745 UTC SHOWS
DENSE LOW AND MIDDLE LEVEL CLOUDS IN THE VICINITY OF THE VOLCANO
MAKING IT IMPOSSIBLE TO DETECT ANY ASH. THE GUAYAQUIL MWO REPORTED
ASH FROM THE VOLCANO TO FL280 MOVING SOUTHWEST. THE GEOPHYSICAL
INSTITUTE REPORTS HIGH SEISMIC ACTIVITY AND THAT IT IS LIKELY THE
VOLCANO WILL CONTINUE TO VENT ASH AND GASES. 
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TRAJECTORY: UPPER AIR DATA SUGGESTS ANY ASH TO FL280 WOULD MOVE TO
THE WEST TO SOUTHWEST AROUND 10 KNOTS.
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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 STATEMENT WILL BE ISSUED AROUND 25/1400 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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