GEMPAK users will find it best to convert the netCDF output to a GRIB file and then utilize the dcgrib2 decoder to translate the output to a ".gem" (for use in GEMPAK) file. To transform the WRF netCDF output file to GRIB utilize the wrf_post.pl script
For more information, please visit the GEMPAK Home Page.
Please direct any additional questions to support-gempak@unidata.ucar.edu