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 ...

The thunderstorms on July 28 produced two damage-causing tornadoes in South Dakota, and a third in Iowa, according to the National Weather Service.

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

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 ...

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

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

Monday’s storm system produced two tornadoes in Gregory County and a third near Alvord, Iowa, in Lyon County, the National ...

A group of inmates from the South Dakota Department of Corrections system is helping with the storm clean-up in Hudson.