Severe thunderstorms could continue into July 29, bringing havoc to morning commutes in Chicago, Milwaukee and Indianapolis.

The National Weather Service has preliminarily classified overnight storms from the Upper Plains to the Midwest as a derecho.

The most intense storms, with wind gusts potentially exceeding 75 m.p.h., were forecast for central and eastern South Dakota, ...

The National Weather Service in Sioux Falls has confirmed a tornado in Lyon County, Iowa, that occurred during Monday's ...

Sometimes referred to as an inland hurricane, derechos are among weather's most destructive phenomena. And there's one headed for the midwest.

Potent storms were hitting the northern U.S. on Monday, with a potential to turn into a derecho with hurricane-force winds.

Early models showed the possibility of a derecho forming in Minnesota between Sunday evening and Monday, but the system ended ...

Severe thunderstorms torn across a large chunk of Southeastern Minnesota and Northern Iowa late Monday night into early ...

One severe thunderstorm is capable of producing strong winds. But when they team up in summer, they can produce widespread ...

A derecho can bring particularly violent thunderstorms to the Midwest. Here's what Iowans should know about storm risks on ...

Thunderstorms expected to develop in the late afternoon on July 28 could combine to form a derecho over eastern South Dakota, according to the National Weather Service's Weather Prediction Center.