FVXX23 KNES 211814 VOLCANIC ASH ADVISORY ISSUED: 2006FEB21/1745Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128 W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2006/ INFORMATION SOURCE: GOES-12. GFS MODEL WINDS. NAM MODEL WINDS. RADIOSONDE. ERUPTION DETAILS: ASH OBSERVED AT 21/1108Z OBS ASH DATE/TIME: 21/1715Z OBS ASH CLOUD: FCST ASH CLOUD +6H: 21/2330Z FCST ASH CLOUD +12H: 22/0530Z FCST ASH CLOUD +18H: 22/1130Z REMARKS: CLOUDS BLANKET THE AREA OF THE SUMMIT MAKING DETECTION OF ASH DIFFICULT. ASH SEEN 6 HOURS AGO IS NO LONGER VISIBLE. WALTER ... NEXT ADVISORY: WILL BE ISSUED BY 2006FEB21/2345Z NNNN