FVXX21 KWBC 280530
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0530 UTC 28 DEC 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-303         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.
INSTITUTE GEOFISICO REPORT AND 12 HOUR FORECAST WIND DATA FROM THE
18UTC AVIATION MODEL.
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ERUPTION DETAILS: EMISSIONS OF ASH AND STEAM
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DETAILS OF ASH: SATELLITE IMAGERY THRU 28/0445 UTC DOES NOT SHOW ANY
ASH IN THE VICINITY OF THE VOLCANO. THE INSTITUTE GEOFISICO REPORTS
TWO ERUPTIONS OCCURRED ON THE 27TH.  THE LATEST AND BIGGEST AT
27/1400 UTC WITH ASH REPORTED TO FL180 MOVING SOUTH SOUTHEAST.
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TRAJECTORY: ANY BELOW FL180 WOULD MOVE TOWARDS THE SOUTH SOUTHEAST
AT 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..
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 28/1130 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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