A tornado warning, replete with threatening funnel clouds, made IndyCar drivers' weekend at Iowa Speedway extra memorable.

Heavy rain caused flooding issues in Ames and rotation was observed in clouds around the Iowa Speedway in Newton as the area ...

A confirmed large and extremely dangerous tornado has been tracked near Mazomanie, Wisconsin, which is approximately 12 miles ...

Cooler air surging south across the state has confined the severe weather risk to mainly far southern and southeast Iowa.

After an afternoon filled with tornado sirens, lightning strikes, torrential rain and visible cloud rotation near Iowa ...

Listen to the sirens going off at the track.

National Weather Service data shows at least two tornadoes formed in Iowa Friday. The pair of twisters touched down on ...

Chad Hahn, warning coordination meteorologist at the National Weather Service, also confirmed a tornado did not touch down in ...

Heavy rain caused flooding issues in Ames and rotation was observed in clouds around the Iowa Speedway in Newton while the ...

Drivers and teams captured photos and videos of the storm making its way through the area. IndyCar reporters said tornado ...

A tornado warning interrupted practice at the Iowa Speedway in Newton for INDYCAR Race Weekend Friday.There are several ...

Eyewitness captures moment in which a tornado warning interrupts IndyCar practice at Iowa Speedway in Newton. Video credit: ...