Tens of millions of people from the Plains to the Southeast will again be at risk of severe weather, which could halt travel back home after the busy Memorial Day holiday weekend, according to Fox Weather news.

In recent days, several regions have been battered by extreme weather, with reports of building damage in Oklahoma, flooding and water rescues in Missouri, and severe thunderstorms sweeping through Florida on Saturday.

On Sunday, a powerful storm brought massive, DVD-sized hail to the Afton area in Texas. According to the FOX Forecast Center, rising temperatures are expected to create an increasingly unstable atmosphere across parts of Central Texas. This instability could lead to the development of supercell thunderstorms in Central and West Texas, with storm clusters potentially pushing into northeastern Texas.

The National Oceanic and Atmospheric Administration’s Storm Prediction Center (SPC) has issued a Level 3 out of 5 severe thunderstorm risk for the area. This alert includes cities such as Abilene, Killeen, San Angelo, Copperas Cove, and Kerrville.

A Level 2 threat extends from Texas into Louisiana, affecting more than 7 million people in cities like San Antonio, Austin, Waco, and Tyler in Texas, as well as Shreveport, Louisiana.

Meanwhile, a broader Level 1 threat spans from Colorado and New Mexico to Georgia and South Carolina.

The main hazards from these storms include large hail and damaging wind gusts, though isolated tornadoes are also possible.

Meteorologists from the National Weather Service (NWS) issued flood watches and flash flood warnings throughout the region, with severe thunderstorms also in the forecast.

"Several rounds of thunderstorms are expected to affect parts of the Southern Plains, Mid-South, and Tennessee Valley through Memorial Day," the NWS stated in a Monday morning forecast. "These storms could bring large hail, damaging wind gusts, and isolated tornadoes. Heavy rainfall is also anticipated, potentially causing widespread flash flooding."

Over 30 Texas counties—including Houston, Austin, and Trinity—were placed under a severe thunderstorm watch until 5 a.m. In a Monday evening update, the NWS Houston office warned that strong winds, with localized gusts reaching up to 58 miles per hour, were possible and could result in wind-related damage.