In this study, the WRF-HAILCAST model was used to simulate two (extreme) hail events that occurred in 2022 in the northwest region of Croatia. The analysis of these events included a review of synoptic charts, an examination of radiosonde profiles from the Zagreb - Maksimir station, and the monitoring of surface meteorological parameter measurements. The high-resolution mesoscale numerical model WRF-HAILCAST was used to recreate the atmospheric conditions during the chosen two days, with a specific emphasis on the evolution of convection and the formation of hail. The objective of this study was to evaluate the model’s ability to accurately simulate hail events and determine the extent to which these events could be classified as extreme. Simulated spatial distributions of hail were compared to observed hail reports collected from the Croatian Meteorological and Hydrological Service’s surface stations, as well as with a European Severe Weather Database. Furthermore, the simulated potential for lightning activity was compared to lightning data provided by LINET network. On 25 May 2022, the model overestimated the occurrence of hail in specific areas, whereas on 2 June 2022, it underestimated hail events in certain regions. Furthermore, the results indicated that the model underestimated hailstone size in both cases. Despite these deviations, verification measures suggested satisfactory results, indicating that the model successfully simulated the conditions for development of convection and the formation of hail.