Weather map showing record heat, in red colors, across the Southwest.
Forecast high temperatures on June 17, 2021, with boxes indicating record highs. (Weatherbell)

A dangerous and widespread mid-June heat wave is bringing blowtorch-like heat, skyrocketing power demand, and “critical” wildfire danger to much of the West Tuesday through this weekend.

Why it matters: The heat is building in a region that is experiencing a record drought, leading to dangerous fire weather conditions, straining electrical grids, and causing water supplies to dwindle further. The heat itself may prove deadly.

Threat level: While the Southwest in particular is used to hot weather, this event could break all-time records in normally hot places like Las Vegas, where the all-time high temperature of 117°F could be toppled and overnight low temperatures won’t fall below 90°F for several days.

  • The heat wave has engulfed regions from New Mexico to California, northeastward to Utah, and all the way north to the Canadian border, with temperatures approaching the century mark Tuesday in Wyoming and Montana.

Details: Heat warnings and advisories are in effect for tens of millions.

  • Death Valley, Calif., which holds the U.S. record for hottest temperature ever recorded, could eclipse 120°F for several days, possibly […]
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