FVXX21 KWBC 061200
VOLCANIC ASH ADVISORY
ISSUED 1145 UTC 06 JUL 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-789         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. SIX HOUR WIND FORECAST FROM THE 06/0600 UTC AVIATION
MODEL. JULY 5 GEOPHYSICAL INSTITUTE REPORT.  SIGMET FROM
GUAYAQUIL METEOROLOGICAL WATCH OFFICE.
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ERUPTION DETAILS: NEARLY CONTINUOUS GAS AND OCCASIONAL ASH
EMISSIONS.  
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DETAILS OF ASH: NO ASH IS SEEN IN SATELLITE IMAGERY THROUGH
06/1115 UTC POSSIBLY BECAUSE OF THE LOW LEVEL WEATHER CLOUDS
IN THE AREA.  HOWEVER AT 05/2302 UTC THE GEOPHYSICAL INSTITUTE 
REPORTED VOLCANIC ASH OVER THE VOLCANO.  THE ASH WAS TO FL225
AND MOVING TOWARDS THE WEST.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN
THE SUMMIT AND FL225 WOULD MOVE TOWARD THE WEST AT LESS THAN
15 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT MESSAGE WILL BE ISSUED BY 06/1800 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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