FVXX23 KWBC 312345 VOLCANIC ASH ADVISORY ISSUED: 2001DEC31/2345Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S 7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2001/296 . INFORMATION SOURCE: GOES-8 VISIBLE..INFRARED AND MULTISPECTRAL IMAGERY. GEOPHYSICAL INSTITUTE. . ERUPTION DETAILS: VOLCANIC ASH OVER THE VOLCANO AT 31/1650Z. . DETAILS OF ASH CLOUD: THE PREVIOUSLY REPORTED ASH CLOUD DISSIPATED IN SATELLITE IMAGERY AROUND 31/2045Z. THERE HAVE BEEN NO NEW REPORTS FROM THE GEOPHYSICAL INSTITUTE. THERE MAY CONTINUE TO BE SOME INTERMITTENT NEAR SUMMIT ACTIVITY THAT WILL BE DIFFICULT TO DETECT IN NIGHT TIME IMAGERY. ANY ASH WILL LIKELY BE BELOW FL230 AND WITHIN 15 KM (8 NMI) OF THE SUMMIT. WE WILL CONTINUE TO MONITOR THE AREA. . TRAJECTORY: ANY ASH BETWEEN THE SUMMIT AND FL230 IS FORECAST TO MOVE WESTERLY AT LESS THAN 10 KNOTS. . OUTLOOK: SEE SIGMETS. . NEXT ADVISORY: NO FURTHER ADVISORIES. . . NNNN