FVXX21 KWBC 041700
VOLCANIC ASH ADVISORY STATEMENT  
ISSUED 1700 UTC 04 FEB 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-143         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 AND MULTISPECTRAL AND
INFRARED IMAGERY. 12 HOUR WIND FORECAST FROM THE 04/0600 UTC
AVIATION MODEL. GEOPHYSICAL INSTITUTE IN QUITO.
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ERUPTION DETAILS: INTERMITTENT ERUPTIONS.
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DETAILS OF ASH: SURFACE AND AIRCRAFT OBSERVATIONS FROM QUITO REPORT
VOLCANIC ASH OVER THE VOLCANO AT FL230. SATELLIE IMAGERY THROUGH
1615 UTC  SHOWS EXTENSIVE CLOUDINESS OVER AND NEAR THE SUMMIT MAKING
DETECTION OF ASH EXTREMELY DIFFICULT.
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TRAJECTORY: ANY ASH REMAINING AT FL230 WOULD CONTINUE TO MOVE TOWARD
THE WEST AT 15-20 KTS.
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OUTLOOK:  SEE SIGMETS AND VAFTAD.
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NEXT MESSAGE WILL BE ISSUED BY 04/2300 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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