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Hi Abby, So, it turns out that the NEXRAD data files you are downloading contain structure data. In the words of our NetCDF guru, onverting data with structures to NetCDF is "tricky" and requires "sophisticated tools." While structures are supported in NetCDF 4 (but not NetCDF 3), we don't have a tool to handle the conversion necessary for the data files you have. In the short term, this means you will not be able to convert the files to NetCDF with our tools, though we should have a solution in the longer term. -Lansing Ticket Details =================== Ticket ID: UIV-204072 Department: Support netCDF Java Priority: Normal Status: Open