FVXX21 KWBC 121000
VOLCANIC ASH ADVISORY  
ISSUED 1000 UTC 12 JUN 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-687      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:  NO ASH CAN BE SEEN IN SATELLITE IMAGERY
THROUGH 12/0915 UTC BUT ASH DETECTION CONTINUES TO BE HINDERED
BY LOW LEVEL WEATHER CLOUDS OVER THE AREA.  A GUAYAQUIL
METEOROLOGICAL WATCH OFFICE SIGMET REPORTED THAT THE
GEOPHYSICAL INSTITUTE OBSERVED ASH TO FL260 OVER THE VOLCANO
AT 12/0232 UTC. 
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN
THE SUMMIT AND FL260 WOULD MOVE TOWARD THE WEST AT 15 TO 20
KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT MESSAGE WILL BE ISSUED BY 12/1600 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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