FVXX20 KNES 071701 CCA VOLCANIC ASH ADVISORY -CORRECTION ISSUED: 20070807/1701Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128 W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2007/481 INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12. GFS WINDS. METAR. SEISMIC STATIONS ERUPTION DETAILS: SFC REPORT AT 1612Z OBS ASH DATE/TIME: 07/1615Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL250 MOVING TO W 20-30 KNOTS. FCST ASH CLOUD +6H: 07/2230Z FCST ASH CLOUD +12H: 08/0430Z FCST ASH CLOUD +18H: 08/1030Z REMARKS: CORRECTION FOR ADVISORY NUMBER...RIO BAMBA SURFACE REPORT OF AN ASH CLOUD AT 1612 CANNOT BE SEEN IN SATELLITE IMAGERY THRU 1615Z BUT THERE ARE DEVELOPING CUMULUS IN THE AREA. NEAR SUMMIT SEISMIC STATIONS CONFIRM INCREASED ACTIVITY AT 1550 AND AGAIN AT 1640Z. IF ASH IS SEEN WILL UPDATE VAA EARLY. ...GALLINA NEXT ADVISORY: WILL BE ISSUED BY 20070807/2300Z