FVXX21 KWBC 041900
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1900 UTC 04 JAN 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-017         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 INFRARED AND MULTISPECTRAL
IMAGERY. 6 HOUR WIND FORECAST FROM THE 04/0600 UTC AVIATION MODEL.
04/1200 UTC UPPER WIND MEASUREMENTS FROM THE GEOPHYSICAL INSTITUTE. 
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ERUPTION DETAILS: CONTINUOUS ASH AND STEAM EMISSIONS.
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DETAILS OF ASH: ASH PLUMES WERE DETECTED ON THE 04/1445 UTC VISIBLE
SATELLITE IMAGE.  ONE PLUME WAS MOVING SOUTHWESTWARD AND ANOTHER
EASTWARD.  AT 1515 UTC THE FIRST PLUME EXTENDED SOUTHWESTWARD 14 KM
(8 NMI) TO A POINT 0134S 7833W AND WAS 2 KM (1 NMI) WIDE.  THE
SECOND PLUME EXTENDED FROM 0128S 7823W THROUGH 0124S 7817W TO 0127S
7810W AND WAS 10 KM (5 NMI) WIDE.  BOTH PLUMES WERE ESTIMATED TO BE
BETWEEN FL300 AND FL350 WHERE WINDS ARE LIGHT AND VARIABLE.
OBSERVERS FROM THE GEOPHYSICAL INSTITUTE REPORTED CONTINUOUS
EMISSIONS OF ASH BETWEEN FL300 AND FL330.     
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TRAJECTORY: FIRST PLUME TOWARDS THE SOUTHWEST AT 10 KNOTS. SECOND
PLUME TOWARDS THE EAST AT 10-15 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 05/0100 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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CLARK/NOAA/NESDIS/SAB
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NNNN
"Attached Graphic Map Depicting Ash" 

"Graphic Map Depicting Ash"