Frigid temperatures still gripped much of the United States on Wednesday as 55 million people in parts of the Midwest, Mid-Atlantic, and Southeast remain under frost and freeze alerts.

Rivers rose and flooding worsened across the U.S. South and Midwest, threatening communities already waterlogged and badly damaged by days of heavy rain and storms that killed at least 23 people.

Some of the nation's worst flooding since Hurricane Helene last fall is continuing to unfold in the central U.S. this week.

Severe storms have caused flooding across Louisville, which in turn is causing roads to be closed. The following roads/ramps in Louisville are closed as of Tuesday morning: These roads will not reopen until the water levels have come down enough that is safe for drivers, officials said.

Round after round of heavy rains have pounded the central U.S., leading to rapidly rising waterways and prompting a series of flash flood emergencies Friday night in Missouri, Texas and Arkansas.

Thousands of Arkansans remain without power Monday after several days of severe weather swept through the state, injuring 13 people.

The metro region’s housing shortage is acute. But by 2040, dozens of neighborhoods and suburbs are likely to have lost thousands of homes to floods, a new report found.

Erwin said Burns residents are exhausted, particularly at the prospect of yet more flooding. More flooding could mean more Burns residents unable to use their bathrooms, sinks and washing machines and an even longer wait for the sewer system to be cleared of sewage and floodwater.