FVXX20 KWBC 091520 VOLCANIC ASH ADVISORY ISSUED: 2002OCT09/1520Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/492 . INFORMATION SOURCE: GOES-8 IMAGERY. GEOPHYSICAL INSTITUTE. GUAYAQUIL MWO SIGMET. AVN MODEL WINDS FORECAST. . ERUPTION DETAILS: EXPLOSION OBSERVED AT 09/1358Z OBS ASH DATE/TIME: 09/1358Z . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL250 MOVING W 10-15 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS . REMARKS: THE GEOPHYSICAL INSTITUTE REPORTS AN EXPLOSION AT 09/1358Z WITH ASH. ASH CAN NOT BE SEEN IN SATELLITE IMAGERY THROUGH 09/1445Z DUE TO EXTENSIVE CLOUDINESS......RUMINSKI . NEXT ADVISORY: WILL BE ISSUED BY 09/2100Z . NNNN