FVXX21 KNES 211711 VOLCANIC ASH ADVISORY ISSUED: 20070421/1709Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128 W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2007/237 INFORMATION SOURCE: GOES-12. GEOPHYSICAL INST. ERUPTION DETAILS: ONGOING EMISSIONS OF ASH AND GASES OBS ASH DATE/TIME: 21/1615Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL190 MOVING TO N 10 KNOTS. FCST ASH CLOUD +6H: 21/2230Z FCST ASH CLOUD +12H: 22/0430Z FCST ASH CLOUD +18H: 22/1030Z REMARKS: THE OBSERVATORY REPORTS CONTINUED EMISSIONS FROM THE VOLCANO TO AROUND 2 KM ABOVE THE SUMMIT THAT MOVE NORTH. DUE TO CLOUDS NO PLUME CAN BE DETECTED IN SATELLITE. ...SWANSON NEXT ADVISORY: WILL BE ISSUED BY 20070421/2315Z