Update as of 7 p.m.: A tornado warning is in effect for parts of Codington County, including Watertown, until 7:30 p.m., the ...

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

The tornado that touched down in Henry Sunday traveled nearly four miles, a new report from the National Weather Service said ...

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

Free tree and branch drop off sites are open in Sioux Falls following severe weather that swept through Sioux Falls Monday ...

Jeff Chapman, a meteorologist with the National Weather Service in Sioux Falls, said thunderstorms and strong winds between ...

Reed Timmer followed this storm throughout the state of South Dakota. He saw strong winds, tornadoes, large hail, and even a ...

Severe storms overnight in Iowa caused fallen trees and downed power lines. See storm damage reports from across the state.

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

Potent storms were hitting the northern U.S. on Monday, with a potential to turn into a derecho with hurricane-force winds.

Earlier this week, the town of Henry experienced a tornado, with one family losing their home. On the scene, assessing the damage was one of two tornado experts in the country.

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