FVXX21 KWBC 120030
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0030 UTC 12 FEB 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-178         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..MULTISPECTRAL AND INFRARED
IMAGERY.  GEOPHYSICAL INSTITUTE IN QUITO.  6 HOUR WIND FORECAST FROM
THE 11/1800 UTC AVIATION MODEL. 
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ERUPTION DETAILS: CONTINUOUS ERUPTION OF ASH AND STEAM
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DETAILS OF ASH: IT IS DIFFICULT TO DETECT ASH IN THE CURRENT
MULTISPECTRAL IMAGERY THROUGH 11/2345 UTC.  HOWEVER THE LAST FEW
VISIBLE IMAGES OF THE DAY DID SHOW HINTS OF ASH AROUND THE SUMMIT
AND MOVING GENERALLY TOWARDS THE WEST AWAY FROM THE SUMMIT.  BASED
ON THIS MOVEMENT..FORECAST WINDS AND DATA FROM THE GEOPHYSICAL
INSTITUTE..THERE IS NO REASON TO CHANGE CURRENT THINKING THAT THE
HEIGHT OF THE ASH IS AT FL220. 
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TRAJECTORY: ASH AT FL220 WOULD MOVE TOWARD THE WEST-SOUTHWEST AT 20
TO 30 KNOTS.
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OUTLOOK:  SEE SIGMETS AND VAFTAD.
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THE NEXT STATEMENT WILL BE ISSUED AT 12/0630 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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WALTER
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