FVXX21 KWBC 210900
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0900 UTC 21 DEC 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-274        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. 
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ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM.
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DETAILS OF ASH: ASH WAS NOT DETECTED ON SATELLITE IMAGERY THROUGH
21/0815 UTC. THERE IS HOWEVER AN OCCASIONAL HOT SPOT OBSERVED
THROUGH PARTLY CLOUDY CONDITIONS AT THE SUMMIT. 
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TRAJECTORY: NO ASH IS CURRENTLY BEING DETECTED. 
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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 21/1500 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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