FVXX20 KWBC 021720
VOLCANIC ASH ADVISORY
ISSUED: 2001DEC02/1720Z   VAAC: WASHINGTON
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VOLCANO: TUNGURAHUA  1502-08
LOCATION: 0128S 7826W    AREA: ECUADOR
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SUMMIT ELEVATION: 16480 FT (5023 M)
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ADVISORY NUMBER: 2001/289
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INFORMATION SOURCE: SIGMET FROM GUAYAQUIL METEOROLOGICAL WATCH
OFFICE..GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY.
AVIATION MODEL UPPER LEVEL WIND FORECAST.
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ERUPTION DETAILS: ASH OVER THE VOLCANO OBSERVED AT 02/1640Z.
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DETAILS OF ASH CLOUD: THE GEOPHYSICAL INSTITUTE OBSERVED ASH OVER
THE VOLCANO AT 1640Z.  NO HEIGHT OR MOVEMENT WAS SPECIFIED. 
UNDER FAIRLY CLEAR SKIES NO ASH CAN BE SEEN IN SATELLITE IMAGERY
THROUGH 1645Z.  THEREFORE WE SUSPECT THAT THE ASH EMISSION MIGHT
STILL BE NEAR THE SUMMIT AND SO WE ESTIMATE THAT THE ASH IS BELOW
FL200.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN THE
SUMMIT AND FL200 WOULD MOVE TO THE SOUTHWEST AT LESS THAN 15
KNOTS.
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OUTLOOK:  SEE SIGMETS.
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NEXT ADVISORY: NO FURTHER ADVISORIES
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