FVXX21 KWBC 110730
VOLCANIC ASH ADVISORY
ISSUED 0730 UTC 11 JUL 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-809         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. JULY 10 REPORT
FROM GEOPHYSICAL INSTITUTE IN QUITO.
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ERUPTION DETAILS: GASES WITH OCCASIONAL ASH EMISSIONS.  
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DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY
THROUGH 11/0645 UTC POSSIBLY BECAUSE OF THE LOW LEVEL WEATHER
CLOUDS IN THE AREA. ASH WAS LAST SEEN IN SATELLITE IMAGERY AT
10/1645 UTC.  THIS ASH WAS ESTIMATED BETWEEN FL180 AND FL220. 
AND EXTENDED FROM THE SUMMIT TOWARD THE WEST-SOUTHWEST.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN
THE SUMMIT AND FL220 WOULD MOVE TOWARD THE WEST AT ABOUT 10
KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT ADVISORY WILL BE ISSUED BY 11/1330 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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