FVXX21 KWBC 120430
VOLCANIC ASH ADVISORY  
ISSUED 0430 UTC 12 JUN 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-686      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. SIGMET 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 METEOROLOGICAL WATCH OFFICE SIGMET
REPORTS THAT THE GEOPHYSICAL INSTITUTE OBSERVED ASH TO FL260
OVER THE VOLCANO AT 12/0232 UTC.  NO ASH CAN BE SEEN IN
SATELLITE IMAGERY THROUGH 12/0345 UTC BUT ASH DETECTION IS
HINDERED BY THE LOW LEVEL WEATHER CLOUDS COVERING THE AREA. 
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN
THE SUMMIT AND FL260 WOULD MOVE WEST AT 15 TO 20 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT MESSAGE WILL BE ISSUED BY 12/1030 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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