FVXX20 KWBC 171402 VOLCANIC ASH ADVISORY ISSUED: 2003DEC17/1400Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/617 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE ERUPTION DETAILS: ASH EMISSIONS AT 17/1330Z OBS ASH DATE/TIME: 17/1345Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/200 MOVING TO W 10-15 KNOTS. FCST ASH CLOUD+6H: NOT AVBL FCST ASH CLOUD+12H: NOT AVBL FCST ASH CLOUD+18H: NOT AVBL REMARKS: THE GEOPHYSICAL INSTITUTE HAS OBSERVED ASH OVER THE VOLCANO AT 1330Z. SATELLITE IMAGERY DOES NOT INDICATE ANY ASH DUE TO EXTENSIVE CLOUDS IN THE VICINITY OF THE VOLCANO. THE ASH IS ESTIMATED AT FL200 FROM A PILOT REPORT AND IS MOVING TOWARDS THE W AT 10-15 KNOTS. NEXT ADVISORY: WILL BE ISSUED BY 2003DEC17/2000Z NNNN