While two derechos in less than two months is extremely unusual for South Dakota, experts say it's just that — a fluke.

Todd Heitkamp, a National Weather Service meteorologist, said the line of storms appeared to coalesce into a derecho around ...

The last time a derecho hit eastern South Dakota, the sky above Sioux Falls turned green, prompting Reddit users to create ...

Parts of Lincoln County were not as lucky as Sioux Falls, including what the Lincoln County Sheriff's Office called ...

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

The severe thunderstorms that passed through eastern South Dakota on July 28 brought powerful winds to the region.

A dangerous derecho is expected to form in parts of the Northern Plains and Upper Midwest on Monday, with wind gusts over 75 ...

To be called a derecho, the thunderstorm-generated high winds and wind damage should cover a distance of at least 250 miles ...

Thousands were without power and damage was seen across the Siouxland area after storms moved into the area on Monday, July ...

Timmer has a significant following on various social media channels, including more than 1.4 million subscribers on Youtube.

Violent thunderstorms with hurricane-force wind gusts roared across the northern Plains and upper Midwest overnight, downing ...

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