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Cory, The problem is that we don't have the parameter tables for the files. Since you produce the files locally, you should have the correct parameter tables. The error I get is: show nz12kmN-NCEP-ARW-OA_d3_09090218_0008.00000_T2.grb | m Tue Sep 08 11:36:09 MDT 2009 ... Start of Grib1WriteIndex Sep 8, 2009 11:36:10 AM ucar.grib.grib1.GribPDSParamTable readParameterTable WARNING: GribPDSParamTable: Could not find table for center:69 subcenter:0 number:-1 Sep 8, 2009 11:36:10 AM ucar.grib.grib1.GribPDSParamTable getParameterTable SEVERE: GribPDSParamTable: cannot find table for center, subcenter, table 69_0_133 ucar.grib.NotSupportedException: Could not find a table entry for GRIB file with center: 69 subCenter: 0 number: 133 So If you send me the parameter table in ascii format, I can load it into the list of tables and the problem should be solved. It would really help if the table was in the NWS format like: 1:PRES:Pressure [Pa] It looks like the center id is 69 and 70 Thanks, Robb... Ticket Details =================== Ticket ID: IUP-798224 Department: Support netCDF Java Priority: Normal Status: Open