FVXX21 KNES 281740 VOLCANIC ASH ADVISORY ISSUED: 20070428/1738Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128 W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2007/265 INFORMATION SOURCE: GOES-12. GFS WINDS. SIGMET ERUPTION DETAILS: ONGOING EMISSIONS OBS ASH DATE/TIME: 28/1715Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/220 MOVING TO W 5-20 KNOTS. FCST ASH CLOUD +6H: 28/2330Z FCST ASH CLOUD +12H: 29/0530Z FCST ASH CLOUD +18H: 29/1130Z REMARKS: A GUAYAQUIL SIGMET CITES A 1554Z GEOPHYSICAL INST OBSERVATION OF ASH FL165/220. NO ASH CAN BE SEEN IN SATELLITE IMAGERY PROBABLY DUE TO THE WEATHER CLOUDS IN THE AREA. NEXT ADVISORY: WILL BE ISSUED BY 20070428/2345Z