FVXX21 KWBC 312000
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VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 2000 UTC 31 OCTOBER 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-054      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 INFRARED AND MULTISPECTRAL
IMAGERY...GEOPHYSICAL INSTITUTE IN QUITO...QUAYAQUIL MWO...NATIONAL
WEATHER SERVICE WEATHER MODEL DATA                  
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ERUPTION DETAILS: OCCASIONAL VENTING OF ASH AND STEAM.
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DETAILS OF ASH: SURFACE REPORTS ADJACENT TO THE TUNGURAHUA VOLCANO
CONTINUE TO INDICATE VOLCANIC ASH OVER THE SUMMIT. SATELLITE IMAGERY
THROUGH 1915 UTC ALSO SUGGESTS A VERY SMALL ASH CLOUD OF NEAR-SUMMIT
ALTITUDE IN THE VICINITY OF THE VOLCANO. THE GEOPHYSICAL INSTITUTE
HAS ALSO REPORTED RECENTLY THAT STEAM AND OTHER GASES HAVE BEEN
OCCASIONALLY EMITTED. CAUTION IS STRONGLY ADVISED.
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TRAJECTORY: ASH AND GASES AT A NEAR-SUMMIT ALTITUDE ARE EXPECTED TO
MOVE WEST AT 10 TO 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 BY 01/0200 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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ORRISON
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