FVXX20 KWBC 101625 VOLCANIC ASH ADVISORY ISSUED: 2002MAR10/1625Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/135 . INFORMATION SOURCE: GOES-8 IMAGERY. GUAYAQUIL MWO SIGMET. . ERUPTION DETAILS: ASH OBSERVED AT 10/1536Z. . OBS ASH DATE/TIME: 10/1545Z. . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL250 NOT AVAILABLE. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: IT WAS DIFFICULT TO DETECT ASH DUE TO A THIN LAYER OF HIGH LEVEL CLOUD OVER THE REGION. THE REPORT OF ASH BY THE GEOPHYSICAL INSTITUTE WAS ESTIMATED TO FL240 AND MOVING NORTHEAST. . NEXT ADVISORY: WILL BE ISSUED BY 2002MAR10/2230Z. . NNNN