FVXX20 KNES 221800 CCA VOLCANIC ASH ADVISORY -CORRECTION ISSUED: 20070822/1800Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128 W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2007/517 INFORMATION SOURCE: GOES-12. GFS WINDS. GEOPHYSICAL INST. PILOT REPORT. ERUPTION DETAILS: COMTINUING EMISSIONS OBS ASH DATE/TIME: 22/1715Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL240 MOVING TO NW 20-25 KNOTS. FCST ASH CLOUD +6H: 22/2330Z FCST ASH CLOUD +12H: 23/0530Z FCST ASH CLOUD +18H: 23/1130Z REMARKS: LOCAL PILOT REPORTS INDICATED ASH TO FL240 MOVING NW AT 22/1545Z. THE GEOPHYSICAL INSTITUTE REPORTS ASH AT FL180. NO ASH IS SEEN IN IMAGERY ALTHOUGH EXTENSIVE CLOUDS ARE PRESENT. CORRECTED FOR OBS ASH CLOUD ... NEXT ADVISORY: WILL BE ISSUED BY 20070823/0000Z