FVXX20 KWBC 251705 VOLCANIC ASH ADVISORY ISSUED: 2002JAN25/1705Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/023 . INFORMATION SOURCE: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. GUAYAQUIL METEOROLOGICAL WATCH OFFICE. AVIATION MODEL WIND FORECAST. . ERUPTION DETAILS: UNKNOWN . OBS ASH DATE/TIME: 25/1515Z . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA . FCST ASH CLOUD+6H: SEE SIGMETS . REMARKS: THE GEOPHYSICAL INSTITUTE OBSERVED ASH OVER THE VOLCANO. ASH CAN NOT BE SEEN IN SATELLITE IMAGERY DUE TO CLOUDS OVER THE AREA. BROWN . NEXT ADVISORY: NO FURTHER ADVISORIES . NNNN