FVXX20 KWBC 202055 VOLCANIC ASH ADVISORY ISSUED: 2002AUG20/2055Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/406 . INFORMATION SOURCE: GOES-8 IMAGERY. GEOPHYSICAL INSTITUTE. GUAYAQUIL MWO. AVN MODEL WINDS FORECAST. ERUPTION DETAILS: ASH OBSERVED AT 20/2020Z. . OBS ASH DATE/TIME: 20/2020Z . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL200 MOVING WEST AT 10 TO 15 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: A PILOT REPORT CITED IN THE MOST RECENT SIGMET FROM GUAYAQUIL INDICATED AN ASH CLOUD BETWEEN FL165 AND FL200 MOVING TOWARDS THE WEST. ASH WAS NOT DETECTED IN SATELLITE IMAGERY DUE TO CLOUD COVER. THE AREA WILL BE MONITORED AND FURTHER ADVISORIES WILL BE ISSUED IF ASH IS DETECTED IN SUBSEQUENT SATELLITE IMAGES. TURK. . NEXT ADVISORY: NO FURTHER ADVISORIES. . NNNN