FVXX21 KWBC 252300
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 2300 UTC 25 FEB 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-239        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 MULTISPECTRAL AND VISIBLE
IMAGERY...GEOPHYSICAL INSTITUTE...1200 UTC AVIATION MODEL UPPER AIR
SOUNDING DATA.
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ERUPTION DETAILS: EXPLOSIVE ERUPTION AT 25/1630 UTC                  
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DETAILS OF ASH: THE GEOPHYSICAL INSTITUTE REPORTED AN EXPLOSIVE
ERUPTION AT 1630 UTC BASED ON SEISMIC ACTIVITY. AT 2100 UTC
RIOBAMBA/CHIMBORAZO REPORTED ASH MOVING WEST-SOUTHWEST AT FL170. NO
ASH COULD BE DISCERNED IN GOES-8 SATELLITE IMAGERY AT 2045 UTC
BECAUSE OF EXTENSIVE CLOUDINESS IN THE VICINITY.
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TRAJECTORY: ANY ASH FROM THE SUMMIT TO FL280 IS FORECASTED TO MOVE
WESTWARD AT 10 TO 15 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 26/0500 UTC.

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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BROWN
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NNNN