FVXX20 KWBC 040717 VOLCANIC ASH ADVISORY ISSUED: 2003DEC04/0730Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/566 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS. GEOPHYSICAL INSTITUTE ERUPTION DETAILS: OCCASIONAL ASH EMISSIONS OBS ASH DATE/TIME: 04/0645Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/230 MOVING TO S 0-5 KNOTS. FCST ASH CLOUD+6H: NOT AVBL FCST ASH CLOUD+12H: NOT AVBL FCST ASH CLOUD+18H: NOT AVBL REMARKS: THICK CLOUDS IN THE VICINITY OF THE VOLCANO ARE MAKING ASH DIFFICULT TO DETECT IN SATELLITE IMAGERY THROUGH 04/0645Z. THE GEOPHYSICAL INSTITUTE REPORTED ASH BETWEEN FL165/230 AT 04/0313Z. NEXT ADVISORY: WILL BE ISSUED BY 2003DEC04/1330Z. NNNN