FVXX21 KWBC 260333
VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 0333 UTC 26 APR 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-488         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 INFRARED AND MULTISPECTRAL
IMAGERY.  UPPER WINDS FORECAST FROM THE AVIATION MODEL. THE
GEOPHYSICAL INSTITUTE IN QUITO.
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ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS.   
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DETAILS OF ASH: SATELLITE IMAGERY THROUGH 0245 UTC CONTINUED
TO SHOW A VERY DISTINCT HOT SPOT.  MULTISPECTRAL IMAGERY
THROUGH 0245 UTC SHOWED A PLUME EXTENDING FROM THE SUMMIT TO 
POINT 0129S7908W OR ROUGHLY 80 KM (43 NMI) TO THE WEST.  THE
PLUME WAS UP TO 25 KM (13 NMI) WIDE AND ESTIMATED TO BE NEAR
FL320.
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THE ACTIVITY HAS CONTINUED SINCE LATE YESTERDAY AFTERNOON WHEN
THE GEOPHYSICAL INSTITUE INDICATED VOLCANIC ASH OVER THE
VOLCANO AT 25/2048 UTC TO FL320 AND A PILOT REPORTED VOLCANIC
ASH OVER THE VOLCANO TO FL260 MOVING WEST AT 25/2100 UTC. 
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TRAJECTORY: TOWARDS THE WEST AT 15 TO 20 KNOTS.
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OUTLOOK: SEE SIGMETS AND VAFTAD.
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THE NEXT STATEMENT WILL BE ISSUED BY 26/0930 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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KARST
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NNNN"Attached Graphic Map Depicting Ash" 

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