Temperatures in the Dallas-Fort Worth region are expected to reach 106 degrees Fahrenheit, and temperatures in cities further west could reach 120 degrees.
This high heat can be fatal, and local officials urge people to take the risk seriously.
In the southwest, the heat is expected to reach near record highs. Tuscon, Arizona, can expect a 113-degree high on Sunday, and Phoenix can reach 116. Las Vegas is expected to hit 110, and Death Valley will hit a 116 high this weekend.
A thermal warning covers most of Texas, virtually all of Louisiana, and large parts of Mississippi, Alabama, Oklahoma, and New Mexico. Albuquerque is expected to reach 101 degrees on Saturday, and Oklahoma City is expected to reach 1
Temperatures remain in the southeast in the mid-1990s, but humidity leads to an increase in heat indices. Jackson, Mississippi, will see a heat index of 109, New Orleans will reach 110, and Mobile, Alabama, will approach a heat index of 114.
Monthly heat records in the region are unlikely to be broken this weekend. But the temperatures are still high for the season and their length is remarkable.
Heat waves, especially in the southwest, often provide relief in cooler overnight temperatures, but this effect is limited this weekend.
The high temperatures coincide with other unusual weather conditions across the country. The tropical storm Fay lies in the mid-Atlantic and parts of the Pacific Northwest are exposed to below-average temperatures in July.
Heat warnings are different across the country
In the southwest, “we take advantage of the so-called heat risk,” said Marvin Percha, a meteorologist with the National Weather Service. This rating takes weather patterns and judges them based on the normal conditions for the area. The rarity of an event determines its risk.
This differs from other regions of the country where heat indices play a greater role in heat warnings. A thermal indicator such as that used for the Southeast combined with the actual temperature, which is above the temperature norms for the area.
Although the counseling systems differ from region to region, the message is the same: the high heat expected across much of the south this weekend is dangerous and residents should be ready to take security measures.
Stay cool during COVID-19
“If you need to be outside, try to limit your exposure and keep yourself well hydrated,” Percha said. “Look for air-conditioned cooling centers if you have to.”