FVXX20 KWBC 181900 VOLCANIC ASH ADVISORY ISSUED: 2002AUG18/1900Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/402 . INFORMATION SOURCE: GOES-8 IMAGERY. GUAYAQUIL SIGMET. AVN MODEL SURFACE OBSERVATION ERUPTION DETAILS: EXHALATION AT 18/1200Z . OBS ASH DATE/TIME: 18/1400Z . OBS ASH CLOUD: ASH NOT IDENTIFIABLE IN SATELLITE DATA. WINDS FL100-200 MOVING WEST AT 5 TO 10 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: ASH WAS LAST REPORTED AT 18/1400Z BY SURFACE OBSERVATION. SATELLITE DATA DOES NOT INDICATE ANY ASH AT THIS TIME ALTHOUGH THERE ARE CLOUDS PRESENT. NEXT ADVISORY: NO FURTHER ADVISORIES. . NNNN