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 ...

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.

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 Speedway, IndyCar canceled Friday afternoon practice.

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

Visible funnel clouds near the track ensure IndyCar drivers will not be playing ‘Twister’ in practice today at the Iowa ...

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Severe storms and a Tornado Warning halted the IndyCar practice at Iowa Speedway Friday, sending drivers and fans scrambling ...

The storm traveling east has already resulted in an evacuation order from the Harley-Davidson festival on Milwaukee's lakefront.

Severe thunderstorms rolled across the Midwest Friday, bringing rounds of damaging wind gusts, torrential rains and even a ...