FVXX20 KWBC 111540 VOLCANIC ASH ADVISORY ISSUED: 2002JAN11/1540Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S 7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/017 . INFORMATION SOURCE: GEOPHYSICAL INSTITUTE. GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. WIND FORECAST FROM AVIATION MODEL. . ERUPTION DETAILS: ASH OBSERVED AT 11/1416Z. . DETAILS OF ASH CLOUD: THE GEOPHYSICAL INSTITUTE REPORTED VOLCANIC ASH OVER THE VOLCANO TO FL250 AT 1416Z. SATELLITE IMAGERY THROUGH 1515Z SHOWED EXTENSIVE CLOUD COVER OVER THE SUMMIT AND SURROUNDING AREAS PRECLUDING THE DETECTION OF ASH. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH AT OR NEAR FL250 WOULD MOVE TOWARDS THE WEST NORTHWEST AT 10 TO 15 KNOTS. . OUTLOOK: SEE SIGMETS. . NEXT ADVISORY: NO FURTHER ADVISORIES. . TURK/RUMINSKI . NNNN