Sure, it's summer, and it's supposed to be hot. But several parts of the United States will see unusually extreme heat over the next few days.

Parts of the West will see some of the worst of the heat, with notorious hot spot Death Valley expected to reach 121 degrees by Aug. 12, the National Weather Service said. For inhabited locations, cities such as Las Vegas (110 degrees) and Phoenix (111 degrees) are both under extreme heat warnings.

Other hot spots over the next few days include the Northwest and Northeast, along with the southern Plains. In all, nearly 30 million Americans live where heat advisories or extreme heat warnings are in effect, according to the weather service.

Western warmth

As is typical, some of the most extreme heat in the country will be in the Southwest fr

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