FVXX21 KWBC 231415
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1415 UTC 23 DEC 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-284         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 VISIBLE AND INFRARED AND
MULTISPECTRAL IMAGERY...GEOPHYSICAL INSTITUTE REPORT...0600 UTC
AVIATION MODEL WIND FORECAST. 
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ERUPTION DETAILS: NEW ASH PLUME AT 23/1315 UTC.
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DETAILS OF ASH: THE LATEST SATELLITE IMAGERY THRU 1345 UTC SHOWS A
NEW PLUME OF ASH AND STEAM MOVING SOUTHWESTWARD FROM THE VOLCANO.
THE PLUME IS ESTIMATED AT FL230. THE LEADING EDGE OF THE PLUME IS AT
41 KM ( 22 NMI) FROM THE SUMMIT. THE PLUME EXTENDS FROM 1.47S 78.44W
TO 1.74S 78.69W. 
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TRAJECTORY: ANY ASH BETWEEN FL160 AND FL230 WILL MOVE TO THE
SOUTHWEST AT 15 TO 20 KTS.
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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 23/2015 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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KARST/HUGHES
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NNNN
"Attached Graphic Map Depicting Ash" 

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