FVXX21 KWBC 271230
VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 1230 UTC 27 APR 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-494         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 WINDS FORECAST FROM THE AVIATION
MODEL.
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ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS.   
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DETAILS OF ASH: GOES-8 IMAGERY THROUGH 1145 UTC REVEALS A
HOTSPOT OVER THE SUMMIT WITH AN ASH PLUME EXTENDING TO THE
WEST OF THE VOLCANO. THE ASH IS BOUNDED BY POINTS 0115S 7851W
0122S 7857W 0129S 7826W. THIS EXTENDS 60 KM (32 NMI) TO THE
WEST OF THE SUMMIT AND IS 21 KM (11NMI) WIDE AT ITS GREATEST
WIDTH. THE ASH IS ESTIMATED TO BE AT OR BELOW FL200.
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TRAJECTORY: ANY ASH OR STEAM TO FL200 WOULD MOVE TOWARDS THE
WEST AT 15-20 KTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 27/1830 UTC.
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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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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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WALTER/RUMINSKI
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NNNN"Attached Graphic Map Depicting Ash" 

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