FVXX21 KWBC 282000
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VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 2000 UTC 28 OCTOBER 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-042      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 VISIBLE AND INFRARED AND
MULTISPECTRAL IMAGERY  NATIONAL WEATHER SERVICE NUMERICAL WEATHER
MODEL DATA.  
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ERUPTION DETAILS: OCCASIONAL VENTING OF ASH AND STEAM.
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DETAILS OF ASH: GOES-8 SATELLITE IMAGERY THROUGH 28/1915 UTC SHOWS
DENSE METEOROLOGICAL CLOUDS OVER THE AREA OF THE VOLCANO. THEREFORE
IT IS DIFFICULT TO DETECT ANY VOLCANIC ASH.  A 1900 UTC SURFACE
OBSERVATION REPORTED VOLCANIC ASH IN THE VICINITY OF THE VOLCANO TO
FL220.
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TRAJECTORY: MODEL DATA INDICATES THAT ASH BETWEEN FL190 AND FL250 
WOULD MOVE TOWARD THE SOUTHWEST BETWEEN 10 AND 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.
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THE NEXT STATEMENT WILL BE ISSUED AROUND 29/0200 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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KARST
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