FVXX21 KWBC 281130
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1130 UTC 28 DEC 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-304         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
28/0000 UTC AVIATION MODEL.
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ERUPTION DETAILS: EMISSIONS OF ASH AND STEAM
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DETAILS OF ASH: SATELLITE IMAGERY THRU 28/1045 UTC DOES NOT SHOW ANY
ASH IN THE VICINITY OF THE VOLCANO.  SCATTERED MIDDLE LAYER CLOUDS
AROUND THE VOLCANO ARE MAKING IT DIFFICULT TO SEE ANY POSSIBLE ASH
PLUME.
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TRAJECTORY: ANY ASH BELOW FL180 WOULD MOVE TOWARDS THE SOUTH 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 28/1730 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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