FVXX21 KWBC 100625  
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0625 UTC 10 DEC 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-228        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  MULTISPECTRAL AND INFRARED
IMAGERY...UPPER AIR DATA AND REPORTS FROM THE GEOPHYSICAL
INSTITUTE...
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ERUPTION DETAILS: CONTINUOUS EMISSION OF ASH AND STEAM WITH
OCCASIONAL LARGER PUFFS
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DETAILS OF ASH: INFRARED AND MULTISPECTRAL SATELLITE IMAGERY THROUGH
09/0545 UTC CONTINUES SHOW OCCASIONAL PUFFS OF ASH MOVING TOWARD THE
SOUTH-SOUTHWESTWARD.  AT THIS TIME SMALL PUFFS OF ASH CAN BE FAINTLY
SEEN ON MULTISPECTRAL IMAGERY ABOUT 10 NMI SOUTH-SOUTHWEST OF THE
VOLCANO NEAR 1.6S 78.4E AND 60 NMI SOUTH-SOUTHWEST OF THE VOLCANO
NEAR 2.3S 78.9E.  THE GEOPHYSICAL INSTITUTE IS NOW REPORTING THAT
ASH IS REACHING FL310.

TRAJECTORY: SOUTH-SOUTHWEST AT 15 TO 20 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 10/1230 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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NNNN"Attached Graphic Map Depicting Ash" 

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