Heat wave worsens across the American West, raising concerns of power outages and wildfires

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People view the sun set as a child drinks from a water bottle on June 15, 2021 in Los Angeles, California as temperatures soar in an early-season heatwave.
Frederic J. Brown | AFP | Getty Images

An extreme heat wave gripping the western United States will intensify and spread this week, creating dangerous conditions amid the worst drought in the last two decades and raising concerns about severe wildfires and electrical grid failures.

More than 40 million people in the country are forecast to experience triple-digit temperatures this week and roughly 200 million people are projected to see temperatures over 90 degrees. More than three-fourths of the West is in severe drought, according to the U.S. Drought Monitor.

Temperatures in some areas could surpass 120 degrees Fahrenheit and excessive-heat warnings are in place for several states. Nevada and Arizona are forecast to see record temperatures of 125 and 128 degrees, respectively.

Grant Mohn of Las Vegas attempts to fry an egg in the parking area at Badwater Basin, the lowest point in North America at 279 feet below sea level, in Death Valley National Park, California, U.S. August 17, 2020.
David Becker | Reuters

Rupa Basu, chief of air and climate epidemiology for the California Office of Environmental Health Hazard Assessment, said the drought and heat wave create a “perfect storm” for fires and poor air quality. 

Temperatures this week are expected to remain high overnight too, a trend that’s become more frequent with climate change, since global temperature rise is not occurring evenly.

Lower nighttime temperatures that usually provide relief from hot days are disappearing, creating a dangerous combination of high daytime and high nighttime temperatures that don’t provide a chance for people to cool down at night.

The two Arizona Intake Towers are shown at the Hoover Dam on June 15, 2021 in the Lake Mead National Recreation Area, Arizona.
Ethan Miller | Getty Images

“During peak hours, conserve energy, avoid excessive time outdoors especially doing strenuous activity or exercising, drink plenty of water, walk [or] bike instead of using cars for transportation if possible,” Basu said.

High temperatures in areas dependent on air-conditioning could result in grid failures and endanger people unable to escape the heat.

Grid operators in Texas and California have called on residents to limit electricity use in order to avoid blackouts this week. In Texas, high temperatures have already caused a slew mechanical issues at power plants — just four months after a deadly winter storm knocked out power for millions of people.

Dry cracked earth is visible along the banks of Phoenix Lake on April 21, 2021 in Ross, California.
Justin Sullivan | Getty Images

Wildfires have also ignited early this year due to the hot and dry early-season temperatures and high supply of dry brush. As of Wednesday, 33 large blazes have burned more than 360,000 acres in ten states, according to the National Interagency Fire Center.

Worldwide, each decade over the last half century has been hotter than the last, and 2020 tied with 2016 as the hottest year on record.

Global warming has also sent the Southwest U.S. into a decades-long megadrought, which has resulted in declining levels of snowpack, lake and river levels and groundwater availability, among other things.

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