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

Here are the top headlines from this morning. The National Weather Service in Sioux Falls has confirmed a tornado in Lyon County, Iowa, that occurred during Monday’s derecho event. An annual financial ...

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

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

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

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.

The tornado that touched down in rural Codington County Sunday traveled nearly four miles, a new report from the National ...

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

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

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

3:12 p.m. The National Weather Service - Sioux Falls office is warning of widespread, dense freezing fog in Sioux City mainly between 7 p.m. and midnight.

The National Weather Service forecasts heat indexes of up to 100 degrees in Sioux Falls on Saturday and Sunday.