FVXX20 KWBC 041317 VOLCANIC ASH ADVISORY ISSUED: 2003DEC04/1330Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/567 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS. GEOPHYSICAL INSTITUTE ERUPTION DETAILS: OCCASIONAL ASH EMISSIONS OBS ASH DATE/TIME: 04/1245Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/230 MOVING TO SW 5-10 KNOTS. FCST ASH CLOUD+6H: NOT AVBL FCST ASH CLOUD+12H: NOT AVBL FCST ASH CLOUD+18H: NOT AVBL REMARKS: EXTENSIVE CLOUD COVER OVER THE VOLCANO IS MAKING IT DIFFICULT TO DETECT ASH. THE GEOPHYSICAL INSTITUTE REPORTED ASH BETWEEN FL165/230 AT 04/1302Z. NEXT ADVISORY: WILL BE ISSUED BY 2003DEC04/1930Z. NNNN