FVXX21 KWBC 201900
VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 1900 UTC 20 MAY 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-592         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. WIND FORECAST FROM THE AVIATION MODEL.  
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ERUPTION DETAILS: NEARLY CONTINUOUS GAS AND OCCASIONAL ASH
EMISSIONS.   
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DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY
THROUGH 20/1845 UTC DUE TO WEATHER CLOUDS OVER THE AREA. NO
SURFACE BASED OBSERVATIONS CAN BE MADE DUE TO THE WEATHER.
SEISMIC SIGNALS HOWEVER INDICATE CONTINUED ACTIVITY AT THE
VOLCANO.  
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT IF THERE IS ANY
ASH BETWEEN THE SUMMIT AND FL260 IT WOULD MOVE TOWARD THE WEST
AT AROUND 15 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 21/0100 UTC.
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REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC
ASH ADVISORY STATEMENTS 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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