High temperatures have been baking Nevada, Arizona and parts of California, where thermometer hit 126 in Death Valley. Meanwhile, storms are rolling through the mid-Atlantic. NBC's Brian Williams reports.
Las Vegas - A high pressure system hanging over the West this weekend is expected to bring temperatures extreme even in a region used to baking during the summer.
Notoriously hot Death Valley's forecast could touch 129 degrees, not far off the world-record high of 134 logged there July 10, 1913. The National Weather Service called for 118 in Phoenix, and 117 in Las Vegas on Sunday - a mark reached only twice in Sin City.
"It's brutal out there," said Leslie Carmine, spokeswoman for Catholic Charities, which runs a daytime shelter in Las Vegas to draw homeless people out of the dangerous heat and equip them with sunscreen and bottled water.
While the Southwest boasts the most shocking temperatures, the heat wave is driving up the mercury all over the West. Western Washington - better known for rainy coffee shop weather - should break the 90s early next week, according to the weather service.
Dry southern Utah is forecast to reach higher than 110 degrees, and northern Utah - which markets "the greatest snow on Earth" - is also expected to see triple digits.
The heat wave is "a huge one," National Weather Service specialist Stuart Seto said. "We haven't seen one like this for several years, probably the mid- to late 2000s."
Comment: In fact, it can happen in a matter of months:
Last Ice Age took just SIX months to arrive