FVXX20 KWBC 280400 VOLCANIC ASH ADVISORY ISSUED: 2002JAN28/0400Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/030 . INFORMATION SOURCE: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. AVIATION MODEL WIND FORECAST. . ERUPTION DETAILS: EXHALATION AT 28/0312Z . OBS ASH DATE/TIME: 27/0345Z . OBS ASH CLOUD: SFC/FL300 MOVING E 30 KNOTS ASH NOT OBSERVED ON GOES8 IMAGE. . FCST ASH CLOUD+6H: SEE SIGMETS . REMARKS: NIL. . NEXT ADVISORY: WILL BE ISSUED BY 28/1000Z. . NNNN