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

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

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 ...

Finally, a day without the threat of severe weather. Since Saturday, the weather service has issued 160 warnings…including 19 ...

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.

Much of eastern South Dakota continues to be in a hazardous weather outlook on Tuesday, with a 40 percent chance of showers ...

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

BREAKING: Parts of South Dakota face a dangerous weather situation today as conditions favor the development of a derecho - a ...

Heat advisories have already been issued for Saturday for counties west of Sioux Falls. The heat index is expected to reach ...

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