FVXX20 KNES 312027 VOLCANIC ASH ADVISORY ISSUED: 20060731/2027Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128 W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2006/509 INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12. GFS WINDS. PILOT REPORT. ERUPTION DETAILS: ASH OBSERVED AT 31/1749Z OBS ASH DATE/TIME: 31/1945Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL250 MOVING TO W 20 KNOTS. FCST ASH CLOUD +6H: 01/0200Z FCST ASH CLOUD +12H: 01/0800Z FCST ASH CLOUD +18H: 01/1400Z REMARKS: THE INSTITUTE PASSED ALONG A PILOT REPORT OF AN ASH CLOUD TO FL250 AT 31/1749Z. THERE WAS A WEAK HOTSPOT SEEN EARLIER ON MULTISPECTRAL IMAGERY. THERE MAY BE A WEAK 3 NMI WIDE PLUME EXTENDING ABOUT 15-20 NMI WEST OF THE SUMMIT BUT CLOUDS ARE HINDERING OBSERVATION. ...BALDWIN NEXT ADVISORY: WILL BE ISSUED BY 20060801/0230Z NNNN