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A model is developed in this paper that simulates polarimetric radar returns from rain and hail at X-Band. To do this, the output data from an open-source meteorological model, namely the Weather Research and Forecast (WRF), and a numerical electromagnetic prediction code based on the Transmission-Matrix (T-Matrix) method are jointly used. Promising results are obtained that are in accordance with real observations. This model is intended to be used as input for a weather radar simulator with polarimetric and Doppler estimation capabilities.