FVXX21 KWBC 060400
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0400 UTC 06 DEC 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-211        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 MULTISPECTRAL AND INFRARED IMAGERY. 
UPPER AIR DATA AND DAILY REPORT FOR 05 DECEMBER FROM THE GEOPHYSICAL
INSTITUTE.  U.S. NATIONAL WEATHER SERVICE MODEL DATA.
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ERUPTION DETAILS: CONTINUOUS EMISSION OF ASH AND STEAM.         
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DETAILS OF ASH: NO ASH HAS BEEN OBSERVED SINCE EARLIER TODAY BUT
THERE IS EXTENSIVE METEOROLOGICAL CLOUDS IN THE AREA.

TRAJECTORY: ANY ASH AT FL350 WOULD MOVE TOWARD TOWARDS THE SOUTH
SOUTHWEST AT 15 TO 20 KNOTS.  ANY ASH AT FL250 WOULD MOVE TOWARDS
THE SOUTHWEST AT 5 TO 10 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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EFFECTIVE JANUARY 3 2000 AT 0000 UTC... ALL REFERENCES TO LATITUDE
AND LONGITUDE IN VOLCANIC ASH ADVISORY STATEMENTS WILL BE IN DEGREES
AND MINUTES OF A DEGREE.  EXAMPLE: 16.70N 62.20W  WILL BE 1642N6212W
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THE NEXT STATEMENT WILL BE ISSUED BY 06/1000 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.

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