Hi Ibrahim, You can plot both time series (meteogram) and skew-t charts using GEMPAK grid files. the program GDTSER can plot a time series of a scalar at a single level: http://www.unidata.ucar.edu/cgi-bin/gempak/manual/programs_index?gdtser and the program GDPROF can plot profiles of scalar or vector grids: http://www.unidata.ucar.edu/cgi-bin/gempak/manual/programs_index?gdprof Have a read through the two manual pages linked above to familiarize yourself with the programs and try them out with your WRF output, and let me know if you have any follow up questions. Michael Unidata > Full Name: ibrahim hadzismailovic > Email Address: address@hidden > Organization: Hidrometeorology Institute > Package Version: 6.6.0 > Operating System: linux > Hardware: > Description of problem: Hello, > I started to use GEMPAK to plot wrf-nmm model outputs. I am using the shell > script implemented in the postprocesing softwer (WPPV3 > runwrfposteandgempak)and it is ok. How can I plot meteograms and skew-t > diagrams with same data? Do I need to convert *.gem or *grd to surface data > first?? How?? Thanks and regards. > > Ticket Details =================== Ticket ID: DML-780139 Department: Support GEMPAK Priority: High Status: Open