FVXX21 KWBC 111300
VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 1300 UTC 11 MAY 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-554         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...WINDS FORECAST FROM THE 0600 UTC AVN
MODEL...PILOT REPORT
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ERUPTION DETAILS: OCCASIONAL STEAM AND ASH EMISSIONS.   
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DETAILS OF ASH: SATELLITE IMAGERY THROUGH 1215 UTC SHOWS DENSE
CLOUD COVER OVER THE VOLCANO AND THE SURROUNDING VICINITY
HINDERING ASH DETECTION.  THERE IS HOWEVER A SUSPECT AREA OF
POSSIBLE ASH WEST OF THE SUMMIT.  THIS POSSIBLE ASH EXTENDS
FROM THE SUMMIT ABOUT 40 KM (21 NMI) TO THE WEST..IS 5 KM (3
NMI) WIDE..AND IS ESTIMATED AT A HEIGHT AT OR BELOW FL260.  A
PILOT REPORT AT 1240 UTC CONFIRMED THE PRESENCE OF THE ASH
PLUME.
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TRAJECTORY: ANY ASH THAT MAY EXIST FROM THE SUMMIT TO FL260
WOULD MOVE TOWARDS THE WEST AT 20 TO 25 KNOTS.
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OUTLOOK: SEE SIGMETS AND VAFTAD.
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THE NEXT STATEMENT WILL BE ISSUED BY 11/1900 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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CLARK
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