FVXX21 KWBC 110430
VOLCANIC ASH ADVISORY  
ISSUED 0430 UTC 11 JUN 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-682      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. 
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ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS.  
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DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY
THROUGH 11/0345 UTC DUE TO THE MID LEVEL WEATHER CLOUDS
COVERING THE AREA.  AT ABOUT 10/2145 UTC A POSSIBLE FAINT ASH
PLUME WAS OBSERVED THROUGH A BREAK IN THE CLOUDS.  THIS PLUME
EXTENDED FROM THE SUMMIT TOWARD THE WEST AND WAS UP TO ABOUT
FL230.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN
THE SUMMIT AND FL230 WOULD MOVE TOWARD THE WEST AT 10 TO 15
KNOTS.
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OUTLOOK: SEE SIGMETS AND VAFTAD.
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THE NEXT MESSAGE WILL BE ISSUED BY 11/1030 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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