FVXX20 KWBC 281105 VOLCANIC ASH ADVISORY ISSUED: 2002MAY28/1105Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/243 . INFORMATION SOURCE: GEOPHYSICAL INSTITUTE. GUAYAQUIL MWO SIGMET. GOES 8 SATELLITE IMAGERY. . ERUPTION DETAILS: ERUPTION AT 28/1048Z. . OBS ASH DATE/TIME: 28/1048Z . OBS ASH CLOUD: ASH NOT OBSERVABLE IN SATELLITE IMAGERY. WINDS FL100/FL180 MOVING WEST AT 15 TO 20 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: THE GEOPHYSICAL INSTITUTE REPORTED A PROBABLE ERUPTION OF TUNGURAHUA GENERATING ASH TO FL180. NO ASH COULD BE DETECTED IN SATELLITE IMAGERY THROUGH 1045Z DUE TO EXTENSIVE CLOUD COVER. TURK . NEXT ADVISORY: WILL BE ISSUED BY 2002MAY28/1700Z. . NNNN