On Saturday, the front and the low pressure area don't move much at all, which will keep a good chance of showers and thunderstorms at the track. Rain may be possible at any time of the day, but it looks like the best chances and the most rain will come in the afternoon. This could potentially impact IndyCar qualifying, Indy Lights Race 1, PWC GT/GTA/GT Cup Race 1, and Pro Mazda Race 2.
The low pressure system finally starts to track east on Sunday. I think the majority of racing on Sunday will be dry, but I can't rule out at least a small chance of showers and thunderstorms as the low will continue to be close to Ohio. There should be more sunshine on Sunday than the other days. However, this sunshine could create some instability that could result in afternoon showers and thunderstorms developing.
The total amount of rainfall expected at Mid-Ohio from Friday through Sunday is between an half inch and one inch.
If you're going to be at the track this weekend, stay aware of the weather and have a plan for finding shelter when you hear thunder. You can use the radar link at the top of our website for the latest radar image and lightning strikes.