FVXX21 KWBC 130930
VOLCANIC ASH ADVISORY  
ISSUED 0930 UTC 13 JUN 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-691      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. GEOPHYSICAL
INSTITUTE REPORT. SIGMETS FROM GUAYAQUIL METEOROLOGICAL WATCH
OFFICE
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ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS.  
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DETAILS OF ASH: A GUAYAQUIL SIGMET REPORTS THAT AT 13/0606 UTC
THE GEOPHYSICAL INSTITUTE OBSERVED ASH TO FL290 OVER THE
VOLCANO.  AN INTERMITTENT HOTSPOT IS SEEN IN SHORTWAVE
INFRARED IMAGERY.  NO ASH CAN BE SEEN IN INFRARED AND
MULTISPECTRAL IMAGERY THROUGH 13/0845 UTC BUT LOW LEVEL
WEATHER CLOUDS IN THE AREA COULD BE HINDERING ASH DETECTION. 
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN
THE SUMMIT AND FL290 WOULD MOVE TOWARD THE WEST AT ABOUT 20
KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT MESSAGE WILL BE ISSUED BY 13/1530 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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