After an afternoon filled with tornado sirens, lightning strikes, torrential rain and visible cloud rotation near Iowa Speedway, IndyCar canceled Friday afternoon practice.

IndyCar returns to Iowa this month for an exciting weekend of racing at the Iowa Speedway in Newton. This year there will be no big-name concerts, but still plenty of events for all ages to enjoy July 11-13. Here’s what you need to know:

Severe storms and a Tornado Warning halted the IndyCar practice at Iowa Speedway Friday, sending drivers and fans scrambling for shelter. The doubleheader weekend is still on track with clearer skies and cooler temperatures expected Saturday and Sunday after the passage of the storms.