FVXX21 KWBC 210800
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0800 UTC 21 NOV 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-147         ECUADOR 1.47S 78.44W 
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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...
THE GEOFISICO INSTITUTO...21/0000 UTC AVIATION MODEL UPPER AIR WIND
DATA.
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ERUPTION DETAILS: CONTINUOUS STEAM AND ASH EMISSIONS AS REPORTED BY
THE GEOFISICO INSTITUTO.
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DETAILS OF ASH: SATELLITE IMAGERY THROUGH 21/0715 UTC SHOWS
EXTENSIVE MULTILAYERED CLOUDS SHROUDING THE AREA AROUND THE VOLCANO
MAKING DETECTION OF ASH IMPOSSIBLE.
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TRAJECTORY: ANY ASH AT FL350 WOULD MOVE TOWARD THE WEST-SOUTHWEST AT
10-15KT.
ANY ASH BETWEEN FL350 AND FL450 WOULD MOVE TOWARD THE WEST AT
20-40KT.
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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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OUTLOOK:  SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 21/1400 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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WALTER/SAB/NOAA/NESDIS
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