NOAA's Storm Prediction Center (SPC) has issued a Level 4 out of 5 risk of severe thunderstorms over southeastern Oklahoma due to increasing confidence in baseball-sized hail and strong tornadoes developing Saturday afternoon.

Millions of Americans are expected to be under a multi-day severe storm threat in the Great Plains starting tonight and continuing through the weekend, as forecasters predict nasty conditions.

Large areas in the central region of the United States are set to face multiple bouts of severe weather in the coming days, according to the latest forecasts. Beginning Thursday, the Plains and parts of the South are in line for serious thunderstorms and potential tornadoes.

Tornado warnings have ended for central Iowa following reports of tornadoes in Huxley and Mitchelville.

We are tracking days of severe storms that are not expected to let up anytime soon. Multiple systems will impact different parts of the South through at least Monday, with the greatest impacts expected Saturday and Sunday.

The severe weather in Wisconsin last week brought a record-breaking number of tornado warnings: 92 across the state. One touchdown, in Marathon County, damaged at least 75 homes. The National Weather Service's Green Bay meteorologist-in-chief,

Add Yahoo as a preferred source to see more of our stories on Google. The photo shows a severe storm in Nebraska. In South Texas, officials are warning residents that severe storms are possible on Saturday. (john finney photography/Getty Images) Parts of ...

Severe storms sparked multiple Tornado Warnings Monday night just south of the Kansas City metro.

A massive tornado south of Enid, Oklahoma, flattened homes and caused extensive damage in the area as long-track tornadoes moved across northern Oklahoma Thursday night.Storm Chaser Amanda Benton with

Multiple rounds of severe weather brought at least two confirmed tornadoes to south central Wisconsin Tuesday night.