FVXX21 KWBC 041330 
VOLCANIC ASH ADVISORY
ISSUED 1330 UTC 04 SEP 2000 BY THE WASHINGTON VAAC
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TUNGURAHUA 00-1036        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 VISIBLE INFRARED AND
MULTISPECTRAL IMAGERY. WIND FORECAST FROM THE AVIATION MODEL.
SIGMET FROM GUAYAQUIL METEOROLOGICAL WATCH OFFICE.
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ERUPTION DETAILS: GAS AND ASH EMISSIONS.
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DETAILS OF ASH: NO ASH CAN BE DETECTED IN SATELLITE IMAGERY
THROUGH 04/1245 UTC ALTHOUGH THERE IS EXTENSIVE COVER IN THE
VICINITY OF THE SUMMIT.  THE GEOPHYSICAL INSTITUTE REPORTED 1
WEAK AND 1 MODERATE EXPLOSIONS OVER THE PAST FEW HOURS WITH AN
ESTIMATED APPROXIMATE MAXIMUM HEIGHT OF FL220.   
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN
THE SUMMIT AND FL220 WOULD MOVE TO THE WEST TO WEST-SOUTHWEST
ABOUT 10-15 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT ADVISORY WILL BE ISSUED BY 04/1930 UTC.
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REAL TIME SATELLITE IMAGERY AND 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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