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

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

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.

A 2020 derecho caused widespread damage across Massachusetts and southern. What to know about these destructive storms.

The thunderstorm risk level went from enhanced to moderate for the area, with timing now pushed back to between 5 p.m. and 1 ...

Severe thunderstorms are expected to hit eastern South Dakota in the late afternoon July 28, potentially bringing hurricane-force winds to the region.

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 ...

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

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

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

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