FVXX21 KWBC 111900
VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 1900 UTC 11 MAY 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-555         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 1200 UTC AVN
MODEL.
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ERUPTION DETAILS: OCCASIONAL STEAM AND ASH EMISSIONS.   
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DETAILS OF ASH: SATELLITE IMAGERY THROUGH 1815 UTC SHOWS DENSE
CLOUD COVER OVER THE VOLCANO AND THE SURROUNDING VICINITY
HINDERING ASH DETECTION. HOWEVER A POSSIBLE ASH AND STEAM
PLUME IS PRESENT TO THE WEST OF THE SUMMIT.  THE AREA EXTENDS
ABOUT 25 KM (13 NMI) WEST FROM THE SUMMIT AND IS 6 KM (4 NMI)
WIDE. BECAUSE OF THE CLOUDS IN THE AREA THE ACTUAL EDGE OF THE
ASH IS DIFFICULT TO DISCERN.  THE PLUME IS ESTIMATED AT OR
BELOW FL260.   
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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 12/0100 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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CLARK
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