FVXX21 KWBC 230700
VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 0700 UTC 23 APR 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-476         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.  6 HOUR WIND FORECAST FROM THE 23/0000 UTC AVIATION
MODEL.
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ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS.   
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DETAILS OF ASH: SATELLITE IMAGERY THROUGH 23/0615 UTC SHOWS
LAYERED CLOUDS OVER THE AREA OF THE VOLCANO MAKING DETECTION
OF ASH DIFFICULT.  ASH WAS LAST SEEN ON THE SATELLITE IMAGERY
AT 22/2345 UTC WITH THE HEIGHT ESTIMATED TO FL200.
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TRAJECTORY: ASH TO FL200 WOULD MOVE TOWARD THE WEST-SOUTHWEST
AT 10 TO 15 KNOTS.
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THE NEXT STATEMENT WILL BE ISSUED BY 23/1300 UTC.
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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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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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WALTER
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