FVXX21 KWBC 092310  
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 2310 UTC 09 DEC 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-226        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 VISIBLE
IMAGERY...GUAYAQUIL MWO...UPPER AIR DATA AND REPORTS FROM THE
GEOPHYSICAL INSTITUTE...SURFACE OBSERVATIONS
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ERUPTION DETAILS: CONTINUOUS EMISSION OF ASH AND STEAM....
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DETAILS OF ASH: VISIBLE AND MULTISPECTRAL SATELLITE IMAGERY THROUGH
09/2215 UTC SHOWS THAT A FAIRLY DECENT SIZE ASH CLOUD OVER AND TO
THE SOUTHWEST OF THE SUMMIT. EXTENSIVE SHOWER AND THUNDERSTORM
ACTIVITY NEARBY IS MAKING IT SOMEWHAT DIFFICULT TO ASCERTAIN THE
EXACT SIZE OF THE ASH CLOUD BUT THERE IS CLEARLY ONE PRESENT.
CONFIRMING THE ASH ARE SEVERAL SURFACE OBSERVATIONS IN THE VICINITY
OF TUNGURAHUA. AT THIS TIME THE ASH IS ESTIMATED TO BE REACHING
FL200.
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AT 09/2215 UTC THE ASH CLOUD EXTENDS FROM THE SUMMIT AT LEAST 116 KM
(63 NMI) TO THE SOUTHWEST TO THE POINT 2.19S 79.21W. THE ASH CLOUD
IS ESTIMATED TO BE ABOUT 29 KM (16 NMI) WIDE.
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TRAJECTORY: SOUTHWEST AT 10 TO 20 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
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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 10/0500 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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ORRISON
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NNNN"Attached Graphic Map Depicting Ash" 

"Graphic Map Depicting Ash"