FVXX21 KWBC 180600
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0600 UTC 18 NOV 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-134         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 INFRARED AND MULTISPECTRAL IMAGERY.
UPPER-AIR DATA AND REPORTS FROM THE GEOFISICO INSTITUTO. 
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ERUPTION DETAILS: CONTINUOUS STEAM AND ASH EMISSIONS.
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DETAILS OF ASH: GOES IMAGERY THROUGH 18/0515 UTC SHOWED EXTENSIVE
CLOUDINESS OVER THE AREA.  MULTISPECTRAL IMAGERY BRIEFLY SHOWED A
SMALL AREA OF ASH AROUND THE SUMMIT AT 0245 UTC BUT IT DISSIPATED BY
0345 UTC AND NO ASH HAS BEEN DETECTED SINCE.
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TRAJECTORY: ANY ASH BELOW FL250 WILL MOVE SOUTHERLY AROUND 15 TO 20
KNOTS AND ASH BETWEEN FL300 AND FL3500 WILL MOVE SOUTHWEST AROUND 15
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 AND VAFTAD.
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THE NEXT STATEMENT WILL BE ISSUED BY 18/1200 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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