Bands of heavy rainfall over the central U.S. will affect nearly 46 million people. At least 13 million of them will be in an area with a high to extreme risk of flooding. Some communities in these high-risk locations could see catastrophic flooding.

A wide-reaching storm spawned several intense and violent tornadoes Wednesday and threatens near-nonstop rainfall Thursday that could trigger once-in-a-lifetime flooding. Follow here for live updates.

A destructive weather event will continue for millions of people across the Mid-South on Thursday, with the marathon storm persisting until Sunday.

At least seven people have been killed in a wide swath of violent storms and tornadoes that hit the South and Midwest.

The National Weather Service warned on Thursday of "generational" floods in the U.S. South and Midwest as storms ripped across a swath of the country from Texas to Michigan, whipping up tornadoes and killing two people.

Fierce storms pounded a large stretch of the central-eastern United States overnight, with officials on Thursday reporting at least seven deaths and warning the system continued to bring severe threats.