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

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 rural Codington County Sunday traveled nearly four miles, a new report from the National ...

After heavy storms swept through Sioux Falls many residents are still cleaning up the damage, leaving several with damage to ...

ALVORD, Iowa (KTIV) - A line of thunderstorms with damaging winds moved through Northwest Iowa Monday, July 28. While most of ...

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

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

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.

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

Update as of 6 p.m.: Sioux Falls, and areas to the west and to the north, are under a severe thunderstorm watch until midnight July 27, the NWS states.