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

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

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

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

The last time a derecho hit eastern South Dakota, the sky above Sioux Falls turned green, prompting Reddit users to create images of everything from Cthulhu to the Stay-Puft Marshmallow Man rampaging ...

A moderate threat for severe storms is in place for parts of South Dakota and Minnesota on Monday afternoon into the evening due to the threat of a derecho.

This article originally appeared on Sioux Falls Argus Leader: Car interiors will reach 'lethal' temperatures as extreme heat ...

Severe Thunderstorm Watch in effect for parts of South Dakota and surrounding states, including Sioux Falls, with risks of ...

Severe Thunderstorm Watch is in effect for Sioux Falls and surrounding areas, with wind gusts up to 70 mph and large hail ...

A Heat Advisory is in effect for eastern South Dakota today, with temperatures soaring into the 90s and humidity pushing the ...