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

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 ...

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 ...

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

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

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

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

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

Snow began falling in the area early Monday morning, with reports from the National Weather Service of 8.1 inches in some parts of eastern Sioux Falls by 7 a.m., and more than 9 inches reported in ...

Much of eastern South Dakota continues to be in a hazardous weather outlook on Tuesday, with a 40 percent chance of showers ...

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