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

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

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

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.

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

Storm Chasers captured unreal footage of massive tornadoes ripping through northern South Dakota. One of the first tornadoes ...

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

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

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 ...