FVXX20 KWBC 281030 VOLCANIC ASH ADVISORY ISSUED: 2002FEB28/1030Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/101 . INFORMATION SOURCE: GOES-8 IMAGERY. AVIATION MODEL WIND FORECAST. GEOPHYSICAL INSTITUTE . ERUPTION DETAILS: ASH OBSERVED AT 28/0938Z. . OBS ASH DATE/TIME: 28/1015Z . OBS ASH CLOUD: FL165/FL400 MOVING BETWEEN WEST AND SOUTH AT 15 TO 20 KNOTS. ASH NOT IDENTIFIABLE IN SATELLITE DATA. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: ASH CANNOT BE SEEN IN IMAGERY THROUGH 28/1015Z DUE TO EXTENSIVE WEATHER CLOUDS. . NEXT ADVISORY: WILL BE ISSUED BY 2002FEB28/1630Z. . NNNN