FVXX20 KWBC 061545 VOLCANIC ASH ADVISORY . ISSUED: 2002APR06/1545Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S07826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/198 . INFORMATION SOURCE: GOES-8 IMAGERY. GUAYAQUIL MWO SIGMET. GEOPHYSICAL INSTITUTE. . ERUPTION DETAILS: STEAM AND ASH EMISSION OBSERVED AT 06/1502Z. . OBS ASH DATE/TIME: O6/1502Z. . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL220 MOVING WEST 5-10 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: A VOLCANO PLUME WAS OBSERVED IN SATELLITE IMAGERY AT 1200Z. PLACED CALL TO GEOPHYSICAL INSTITUTE WHO REPORTED MOSTLY STEAM EMISSIONS. SATELLITE IMAGERY BETWEEN 1445Z AND 1515Z NOW SHOWS CLOUD COVER OVER THE AREA. AIRCRAFT REPORT NOTED IN SIGMET INDICATED VOLCANIC EMISSION WHICH MAY NOW CONTAIN ASH. . NEXT ADVISORY: WILL BE ISSUED BY 2002APR6/2145Z. . NNNN