FVXX21 KWBC 110700
VOLCANIC ASH ADVISORY
ISSUED 0700 UTC 11 AUG 2000 BY THE WASHINGTON VAAC
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TUNGURAHUA 00-937        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 THE AVIATION MODEL. AUGUST
10 GEOPHYSICAL INSTITUTE REPORT.
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ERUPTION DETAILS: GASES AND OCCASIONAL ASH EMISSIONS. 
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DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY
THROUGH 11/0615 UTC POSSIBLY BECAUSE OF THE WEATHER CLOUDS
OVER THE AREA. ON AUGUST 10 THE GEOPHYSICAL INSTITUTE REPORTED
VARIABLE ACTIVITY AT THE VOLCANO WITH THICK COURSE GRAIN ASH
NEAR THE SUMMIT AT TIMES.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN 
THE SUMMIT AND FL250 WOULD MOVE TOWARDS THE WEST AT ABOUT 15
KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 11/1300 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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