Many of the storms have been concentrated in the Upper Midwest, but the threat will extend much further on Friday.

A tornado watch remains in effect for northwest Indiana as the threat of tornadoes from two rounds of severe storms is winding down for the Chicago area on Friday evening.

Tornadoes and flooding are possible this weekend as roller-coaster weather sweeps the country, with some states experiencing summer-like temperatures as high as 90 degrees despite being in the middle

Teams from the National Weather Service in La Crosse have released preliminary damage survey results following a significant tornado outbreak on Friday, April 17, across the Upper Midwest.

It's good to be familiar with the National Weather Service's severe weather warning system. Here's more about tornado warnings and watches.

The tornado that struck in Weston and Ringle was destructive

The National Weather Service has confirmed that a total of five tornadoes touched down in Walworth, Racine and Waukesha Counties on the evening of Friday, April 17.

WCCO's crew found multiple houses whose side walls had been torn down; multiple vehicles had been flipped or launched like toys; garages and sheds were leveled.