FVXX21 KWBC 161500
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1500 UTC 16 APR 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-449        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...12 HOUR FORECAST FROM THE 06 UTC
AVIATION MODEL.
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ERUPTION DETAILS: NEARLY CONTINUOUS GAS EMISSIONS WITH
OCCASIONAL ASH EMISSIONS.
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DETAILS OF ASH: NO ASH CAN BE DETECTED IN SATELLITE IMAGERY
THROUGH 16/1415 UTC BECAUSE OF EXTENSIVE WEATHER CLOUDS IN THE
AREA. THE LAST REPORT OF ASH WAS BY THE GEOPHYSICAL INSTITUTE
AT 15/1853 UTC WHEN ASH WAS OBSERVED TO FL300 OVER THE
VOLCANO. 
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN
THE SUMMIT AND FL300 WOULD MOVE TO THE WEST SOUTHWEST AT 10 TO
20 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 16/2100 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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