FVXX20 KWBC 291830 VOLCANIC ASH ADVISORY ISSUED: 2002SEP29/1830Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/472 . INFORMATION SOURCE: GOES-8 IMAGERY. GUAYAQUIL MWO. . ERUPTION DETAILS: EXHALATION AT 29/1728Z AND 1609Z . OBS ASH DATE/TIME: 29/1745Z . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL230 MOVING W 10 TO 15 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS . REMARKS: ASH WAS OBSERVED BY THE GEOPHYSICAL INSTITUTE AT 1609Z TO FL230 AND AT 1728Z TO FL180. LOW AND MID LEVEL CLOUDS COVER THE REGION AROUND THE VOLCANO MAKING IT DIFFICULT TO DETECT ANY ASH FROM SATELLITE. . NEXT ADVISORY: WILL BE ISSUED BY 2002SEP30/0030Z . NNNN