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This product displays output from the Swiss regional model for Central California. Regional models produce forecasts for a specific region, in this case for Central California. One advantage to regional models is that they can run at a much higher resolution than global models enabling them to see features such as mountains, valleys, and small bodies of water that would be too small for a lower resolution model to see. Due to the higher resolution of regional models, they can only be calculated for certain areas and often don’t go as far out in time as global models. In this case, the Swiss HD model runs three days out into the future.