FVXX21 KWBC 170245
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0245 UTC 17 DEC 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-257         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 INFRARED AND MULTISPECTRAL
IMAGERY...17/0000 UTC AVIATION MODEL WIND FORECAST...GEOPHYSICAL
INSTITUTE REPORT AND UPPER AIR DATA.
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ERUPTION DETAILS: NEW PUFF AT 17/0100 UTC.
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DETAILS OF ASH: GOES-8 MULTISPECTRAL IMAGERY THROUGH 0215 UTC SHOWS
A SMALL BUT DENSE PUFF OF ASH FROM TUNGURAHUA MOVIN6 WEST NORTHWEST.
THE ASH ORIGINATED AT ABOUT 0100 UTC AND IS NOW LOCATED 34 KM (18
NMI) TO THE WEST NORTHWEST (294 DEGREES) AT POINT 1.36S 78.73W. THIS
ASH IS ESTIMATED TO BE AT FL280.  
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH AT FL280 TO MOVE
NORTHWEST AT 10 TO 15 KNOTS. ASH BELOW FL240 WOULD MOVE 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
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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 17/0830 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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HUGHES/NOAA/NESDIS/SAB
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NNNN
"Attached Graphic Map Depicting Ash" 

"Graphic Map Depicting Ash"