The scorching heat of Thursday will make much of the Sun Belt hot, with temperatures hovering at 100 for many millions of Americans living between California's Central Valley and the Texas Gulf Coast.
15 million people have been issued heat advisories in Arizona, Nevada, and California.
Houston's mercury is expected to reach 98 degrees by 4 p.m. CDT. This could surpass Space City's record of 97 degrees in June 9, 2020.
Commuters around Sacramento, California will be able to turn on their air conditioners at full blast. Temperatures are likely to reach 100 degrees between 4 p.m. ET and 6 p.m. EDT.
Hot spots between are Las Vegas, which is sweltering at 108 degrees, Phoenix, which is unbearable at 111 degrees, and Waco (Texas) at 99 degrees.
Extreme storms will be a threat to millions of Americans.
The Texas Panhandle will be impacted by dangerous gusts late Thursday afternoon. They then move into Kansas, Nebraska, Kansas, and northwest Arkansas in the evening. Oklahoma City, Norman, Wichita and Wichita are the largest cities in this region.