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More Than 22 Million in Southwest Brace for Dangerous Heat

Dangerous and potentially deadly heat will settle over the Southwestern United States for the next several days, with temperatures in some locations expected to break records and exceed 110 degrees.

More than 22 million people in California, Nevada and Arizona are under some sort of heat-related alert through at least part of the weekend, the National Weather Service said. A heat wave is defined as a period of abnormally and uncomfortably hot and unusually humid weather that lasts for two or more days.

Southland Heat Wave Will Bring Unstable Conditions, Intense Fire Danger

As crews continue to combat wildfires in Northern California, the southern part of the state is preparing for extreme heat and elevated fire danger.

The National Weather Service on Wednesday issued an excessive heat warning across portions of Southern California’s high desert, with the Apple and Lucerne valleys preparing for temperatures that could climb as high as 120 degrees by the weekend — potentially the hottest of the year so far.