FVXX20 KWBC 270156 VOLCANIC ASH ADVISORY ISSUED: 2003AUG27/0200Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/172 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET. . ERUPTION DETAILS: ASH ERUPTION STARTED AT 20/1745Z. OBS ASH DATE/TIME: 27/0115Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL270 MOVING W 10-15 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS AND VAFTAD. REMARKS: ASH CAN NOT BE SEEN IN THE CURRENT SATELLITE IMAGERY THROUGH 27/0115Z. A CURRENT PILOT REPORT AT 26/2225Z PLACES THE HEIGHT OF THE ASH FROM SUMMIT LEVEL TO FL260....WALTER NEXT ADVISORY: WILL BE ISSUED BY 2003AUG27/0800Z. NNNN