Grepgory and Richard, I downloaded the latest NCEP wgrib decoder to see what table NCEP uses to decode the Lake Erie data. NCEP used it's operational table version 3, so I added an entry for center 161 subcenter 1 and version 3 to use the same table. The sample data was display and it looked correct. This new table lookup will be in the next snapshot release, actually thredds is in progress of making a formal release in the next week. Robb.... Ticket Details =================== Ticket ID: LEL-407634 Department: Support netCDF Java Priority: High Status: Open