A large high pressure ridge will be over the Great Lakes region on Friday, providing mostly sunny skies and comfortable temperatures and humidity levels. This ridge moves east on Saturday, which will bring increasing clouds through the day, and warmer temperatures with a southerly flow. There is a small chance that some showers could spread into the area in the evening, but most of this should hold off until after the on-track activity has ended for the day. There's a good chance of showers on Saturday night as an upper level trough moves through the region. For Sunday, the models begin to differ, with some keeping the trough over the area, which could lead to some showers. Other show the trough moving away quickly, resulting in a dry day. For this initial forecast, I will have just a slight chance (20%) of rain due to the uncertainty of timing with this system. Overall, I think there will be a very low chance of impacts on the racing.
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