FVXX21 KWBC 181730
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1730 UTC 18 NOV 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-136         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 VISIBLE INFRARED AND MULTISPECTRAL
IMAGERY. UPPER-AIR DATA AND REPORTS FROM THE GEOFISICO INSTITUTO. 
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ERUPTION DETAILS: CONTINUOUS STEAM AND ASH EMISSIONS.
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DETAILS OF ASH: ASH CANNOT BE SEEN IN SATELLITE IMAGERY THROUGH
18/1645 UTC.  HOWEVER SOME CLOUDINESS OVER THE AREA COULD BE
HINDERING ASH DETECTION.
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TRAJECTORY: ANY ASH BETWEEN FL100 AND FL200 WILL MOVE TO THE WEST AT
LESS THAN 10 KNOTS.  ANY ASH BETWEEN FL250 AND FL350 WILL MOVE
SOUTHWEST BETWEEN 15 AND 30 KNOTS.
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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 AND VAFTAD.
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THE NEXT STATEMENT WILL BE ISSUED BY 18/2330 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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