Strong storms in an area stretching from the Upper Plains to the Midwest have been preliminarily classified by the National ...

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

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

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

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

Before that, another derecho hit New England in July 1995, which caused damage across southern Vermont, southern New Hampshire, Massachusetts, Connecticut, and Rhode Island.

A powerful line of thunderstorms is expected to sweep across a large portion of the U.S. Midwest Monday, bringing strong ...

We’re taking a closer look at a powerful weather system that swept across parts of the Upper Midwest — and what may ...

Severe storms moved through the area Monday night into Tuesday morning. The storm system that moved from South Dakota through ...

The sound of heavy machinery continues to echo through towns like Sioux Center as it picks up the pieces from the derecho.

Thunderstorms that swept across eastern South Dakota during the afternoon and evening of July 28 likely combined to form a derecho. Todd Heitkamp, meteorologist-in-charge at the National Weather ...