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This numerical weather prediction model is developed over Ethiopia for case studies of September 10-11/2008, July 01/2008 and December 01/2008 at 500mb, 600mb and 700mb which predict absolute and relative vorticity, streamfunction and wind field using initial and lateral boundary conditions from NCEP reanalysis data.The model includes the effect of orography of a country using it as grid points.FORTRAN 90 programming language and Golden surfer-8 are used to develop a model and to plot spatial variation system over a country respectively.