FVXX20 KWBC 200700
VOLCANIC ASH ADVISORY 
ISSUED 0700 UTC 20 JUL 2000 BY THE WASHINGTON VAAC
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GUAGUA PICHINCHA 00-173         ECUADOR 0011S 7836W 
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BACKGROUND:    GUAGUA PICHINCHA ECUADOR (1502-02)
               SUMMIT HEIGHT    15695 FT (4784 M)  
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SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL
IMAGERY. 20/0600 UTC FORECAST UPPER WINDS FROM THE 20/0000 UTC
AVN MODEL RUN. GEOPHYSICAL INSTITUTE REPORT
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ERUPTION DETAILS: ASH EMISSION AT 20/0611 UTC.
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DETAILS OF ASH CLOUD: GOES-8 IMAGERY THROUGH 0645 UTC SHOWS NO
ASH ALTHOUGH THERE ARE EXTENSIVE CLOUDS IN THE AREA.  THE
GEOPHYSICAL INSTITUTE REPORTED SEISMIC ACTIVITY INDICATING A
LIKELY EMISSION OF ASH TO AN UNKNOWN ALTITUDE BUT MOST LIKELY
ONLY SLIGHTLY ABOVE SUMMIT LEVEL.

TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH NEAR SUMMIT
LEVEL WOULD MOVE SOUTHWEST AT ABOUT 10 KNOTS.
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OUTLOOK:  SEE SIGMETS.
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THE NEXT ADVISORY WILL BE ISSUED BY 20/1300 UTC.

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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HUGHES
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