FVXX20 KWBC 181850 VOLCANIC ASH ADVISORY ISSUED: 2002MAR18/1850Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S07826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/158 . INFORMATION SOURCE: GOES-8 IMAGERY. AVN MODEL WINDS FORECAST. . ERUPTION DETAILS: GEOPHYSICAL INSTITUTE REPORT OF PROBABLE ASH EMISSION AT 1207Z. . OBS ASH DATE/TIME: 18/1207Z. . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100 TO FL250 LIGHT AND VARIABLE. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: ASH CANNOT BE SEEN IN IMAGERY THROUGH 18/1815Z WITH SCATTERED CLOUDS OVER THE REGION. THERE HAVE BEEN NO FURTHER REPORTS OF ASH AND ANY ACTIVITY IS LIKELY NEAR SUMMIT AND NOT ABOVE FL210. . NEXT ADVISORY: NO FURTHER ADVISORIES. . NNNN