FVXX21 KWBC 230130
VOLCANIC ASH ADVISORY  
ISSUED 0130 UTC 23 JUN 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-730         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 AND MULTISPECTRAL
IMAGERY. WIND FORECAST FROM AVIATION MODEL.  GEOPHYSICAL
INSTITUTE REPORT. 
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ERUPTION DETAILS: NEARLY CONTINUOUS GAS AND OCCASIONAL ASH
EMISSIONS.  
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DETAILS OF ASH: SATELLITE IMAGERY THROUGH 23/0045 UTC SHOWS
THE AREA OBSCURED BY CLOUDS MAKING ASH DETECTION VERY
DIFFICULT. ASH DETECTION FROM THE GROUND WAS ALSO DIFFICULT
TODAY DUE TO CLOUD COVER. SEISMIC ACTIVITY HAS NOT INDICATED
ANY HEIGHTEN ACTIVITY. THE LAST OBSERVED HEIGHT OF ASH WAS
OVER 24 HOURS AGO AND REPORTED NEAR THE SUMMIT TO FL230.
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TRAJECTORY: ANY ASH THAT MAY EXIST BETWEEN THE SUMMIT AND
FL230 WOULD MOVE TO THE WEST AROUND 15 TO 20 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT MESSAGE WILL BE ISSUED BY 23/0730 UTC.
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REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC
ASH ADVISORIES 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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