FVXX21 KWBC 040730
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0730 UTC 04 APR 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-398         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. UPPER WIND FORECAST FROM THE AVIATION MODEL. THE
APRIL 3 REPORT FROM THE GEOPHYSICAL INSTITUTE IN QUITO.
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ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS.
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DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY
THROUGH 04/0645 UTC DUE TO WEATHER CLOUDS COVERING THE AREA.
ON THE AFTERNOON OF APRIL 3 THE GEOPHYSICAL INSTITUTE REPORTED
ASH 2 KM ABOVE THE SUMMIT WHICH WOULD MEAN ASH UP TO ABOUT
FL230.  THIS ASH WAS REPORTED TO BE MOVING WEST AND NORTHWEST.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN
THE SUMMIT AND FL230 WOULD MOVE TOWARD THE WEST AT ABOUT 10
KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 04/1330 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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STREETT
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