FVXX21 KWBC 061730
VOLCANIC ASH ADVISORY
ISSUED 1720 UTC 06 JUL 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-790         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 VISIBLE INFRARED AND
MULTISPECTRAL IMAGERY. SIX HOUR WIND FORECAST FROM THE 06/0600
UTC AVIATION MODEL. SIGMET FROM GUAYAQUIL METEOROLOGICAL WATCH
OFFICE.
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ERUPTION DETAILS: GAS AND OCCASIONAL ASH EMISSIONS.  
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DETAILS OF ASH: NO ASH IS SEEN IN SATELLITE IMAGERY THROUGH
06/1645 UTC POSSIBLY BECAUSE OF THE WEATHER CLOUDS IN THE
AREA.  HOWEVER AT 05/2302 UTC THE GEOPHYSICAL INSTITUTE 
REPORTED VOLCANIC ASH TO FL225 OVER THE VOLCANO AND MOVING
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 06/2330 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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