The National Weather Service in Wilmington issued a severe Thunderstorm warning for northeastern Franklin County Wednesday morning. The storm could bring 60 mph winds and half-dollar-sized hail, potentially damaging vehicles,

A highway of moisture flowing off unusually warm waters — combined with an intense storm system — will result in dangerous flooding from Arkansas through the Ohio and the Tennessee valleys over the next few days.

Another round of strong storms moved through the Chicago area Wednesday afternoon. There was a Tornado Warning for part of northwest Indiana, which has since expired.

On Wednesday at 6:30 p.m. an updated tornado warning was issued by the National Weather Service in effect until 7 p.m. for the Madison Area and Columbia County.

The potent storm system will bring “significant, life-threatening flash flooding” each day through Saturday, the National Weather Service said.

As thunderstorms threatened to hit parts of the Midwest and South, forecasters warned of flash flooding and tornadoes.

Forecasters issued some of their rarest and most extreme alerts on Wednesday as they warned a powerful storm system would stall over the central part of the country.

Several Illinois counties are under a tornado watch as a storm moves northward through the state. The following counties are under a tornado watch as of 3:35 p.m.: Champaign, Christian, Clark, Clay, Coles,