FVXX21 KWBC 250200
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VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 0200 UTC 25 OCTOBER 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-027       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 0115 UTC SHOWS
DENSE LOW AND MIDDLE LEVEL CLOUDS IN THE VICINITY OF THE VOLCANO
MAKING IT IMPOSSIBLE TO DETECT ANY ASH. SIGMET 4 FROM THE GUAYAQUIL
MWO REPORTED ASH OVER THE VOLCANO 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 SUGGEST ANY ASH AT FL220/280  WOULD MOVE
SOUTHWEST AT 10 TO 15 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 25/0800 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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BROWN
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