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.

The National Weather Service has issued a tornado warning for Newton, including the Iowa Speedway on Friday, July 11. The ...

A tornado warning has been issued for Savant Lake and Sturgeon Lake in northwestern Ontario. Here's the latest from ...

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

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

A tornado warning for southeastern Guthrie County was allowed to expire as planned for 12:15 a.m. Friday. According to the ...

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

A nearly two-year evaluation of NWS performance on tornado forecasting concluded that the agency, which faces mounting ...

A risk for thunderstorms will redevelop on Sunday as a cold front pushes into an unstable atmosphere across southern Ontario.

The National Weather Service issues a Severe Thunderstorm Warning for Dodge, Jefferson, and Waukesha Counties until 8:00 ...