FVXX20 KWBC 271600 VOLCANIC ASH ADVISORY ISSUED: 2002JAN27/1600Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/027 . INFORMATION SOURCE: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. GUAYAQUIL METEOROLOGICAL WATCH OFFICE. AVIATION MODEL WIND FORECAST. GEOPHYSICAL INSTITUTE . ERUPTION DETAILS: EXHALATION AT 27/1500Z . OBS ASH DATE/TIME: 27/1515Z . OBS ASH CLOUD: SFC/FL300 MOVING E 20 KNOTS POSSIBLE ASH NOTED IN IMAGERY. . FCST ASH CLOUD+6H: SEE SIGMETS . REMARKS: GEOPHYSICAL INSTITUTE OBSERVED ASH AT 27/1500Z OVER THE VOLCANO WITH HEIGHT UNKNOWN. POSSIBLE ASH SEEN IN SATELLITE IMAGERY MOVING TO THE EAST. ASH IS ESTIMATED AROUND FL300. . NEXT ADVISORY: WILL BE ISSUED BY 2002JAN27/1700Z . NNNN