FVXX21 KWBC 141755
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1755 UTC 14 JAN 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-055        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...UPPER AIR DATA AND REPORTS FROM THE GEOPHYSICAL
INSTITUTE...14/0600 UTC AVIATION MODEL FORECAST SOUNDING DATA...
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ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM...
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DETAILS OF ASH: SATELLITE IMAGERY THROUGH 14/1645 UTC INDICATES A
LARGE CLOUD OF MOSTLY THIN ASH FROM THE SUMMIT TO THE SOUTHWEST WITH
AN EMBEDDED SMALL AREA OF THICKER ASH FROM THE SUMMIT TO THE SOUTH.
THE THIN ASH CLOUD COVERS A LARGE AREA TO THE SOUTHWEST OF THE
SUMMIT DEFINED BY THE POINTS 0127S7828W TO 0209S7835W TO 0208S7905W
TO 0138S7910W TO 0146S7948W TO 0134S7950W TO 0134S7917W.  THICKER
ASH EXTENDS FROM THE SUMMIT SOUTH DEFINED BY THE THREE POINTS
0127S7828W TO 0209S7835W TO 0208S7823W.  NEITHER MODEL WIND
FORECASTS NOR UPPER AIR DATA FROM THE GEOPHYSICAL INSTITUTE ARE
REPRESENTATIVE OF THE MOVEMENT OF THE ASH AS OBSERVED IN SATELLITE
IMAGERY.  THEREFORE EXACT HEIGHT ASSIGNMENTS ARE DIFFICULT TO
ASCERTAIN BUT THE ASH IS BELIEVED TO BE BELOW FL340.
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TRAJECTORY: TOWARDS THE WEST AND 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.
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THE NEXT STATEMENT WILL BE ISSUED BY 15/0000 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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TURK/CLARK
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NNNN
"Attached Graphic Map Depicting Ash" 

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