Sign up for our daily briefing

Make your busy days simpler with Axios AM/PM. Catch up on what's new and why it matters in just 5 minutes.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Catch up on the day's biggest business stories

Subscribe to Axios Closer for insights into the day’s business news and trends and why they matter

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Stay on top of the latest market trends

Subscribe to Axios Markets for the latest market trends and economic insights. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sports news worthy of your time

Binge on the stats and stories that drive the sports world with Axios Sports. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Tech news worthy of your time

Get our smart take on technology from the Valley and D.C. with Axios Login. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Get the inside stories

Get an insider's guide to the new White House with Axios Sneak Peek. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Denver news?

Get a daily digest of the most important stories affecting your hometown with Axios Denver

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Des Moines news?

Get a daily digest of the most important stories affecting your hometown with Axios Des Moines

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Twin Cities news?

Get a daily digest of the most important stories affecting your hometown with Axios Twin Cities

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Tampa Bay news?

Get a daily digest of the most important stories affecting your hometown with Axios Tampa Bay

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Charlotte news?

Get a daily digest of the most important stories affecting your hometown with Axios Charlotte

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sign up for Axios NW Arkansas

Stay up-to-date on the most important and interesting stories affecting NW Arkansas, authored by local reporters

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Satellite image showing smoke plumes from wildfires erupting in California, Oregon, Washington, Idaho and other states, as well as southern British Columbia on Sunday, June 11. Photo: NOAA/CIRA

The latest in a series of severe heat waves to affect the West continues Monday, although conditions are not expected to be quite as extreme as they were during the weekend.

The big picture: The heat, combined with a deepening drought and lightning strikes, has set more than 1 million acres of land in California, Oregon, Washington, and Canada ablaze, with smoke obscuring the skies thousands of miles away.

By the numbers: Another in a series of strong high-pressure areas, colloquially known as "heat domes," has set up across the West. While not quite as strong as the event in late June and early July, it has still led to record-shattering temperatures.

  • 107.7°F: Warmest daily low temperature on record for the U.S., set Sunday at Stovepipe Wells, California.
  • 117°F: All-time high temperature record at Las Vegas McCarran International Airport, which was tied on Saturday, per a National Weather Service statement.
  • 107°F: All-time high temperature record set July 9 at Grand Junction, Colorado, where records date back to 1893.
  • 150,812 acres: Size of the Bootleg Fire in Oregon as of Sunday, after the fire doubled in size on three consecutive days. The fire was forecast to see "extreme" rates of growth as temperatures climbed on Sunday afternoon.
  • 4,000 acres: Size of the fast-growing River Fire in Mariposa and Madera Counties in California, forcing evacuations late Sunday.

Threat level: On Sunday, Canada's Interagency Forest Fire Center elevated its readiness level to 5 — the top of the scale, noting "active agencies may take emergency measures to sustain incident operations."

  • Dozens of wildfires are burning in diverse ecosystems ranging from temperate rainforests to the boreal region that rings the Arctic.
  • The fires in Canada erupted when a massive, slow-moving heat dome stalled over southwestern British Columbia in late June into early July, shattering all-time heat records and killing hundreds.
  • Firefighting agencies in the U.S. are at a high state of readiness due to large wildfires burning in multiple states. On Saturday, two firefighters working with the Bureau of Land Management to conduct aerial reconnaissance of the Cedar Basin Fire in northwest Arizona died when their plane crashed.
  • The Bootleg Fire continues to threaten a key conduit of power between the Pacific Northwest and California. Known as Path 66, the high voltage power lines supply a total of 4,800 megawatts of electricity to the heat-stressed California grid.
  • The fire reduced that flow of electricity on Friday and Saturday and could do so again. Gov. Gavin Newsom signed an executive order to relieve some of the grid stress, and a "Flex Alert" to conserve power is in effect for Monday.

Context: Drought conditions have created tinderbox dry conditions throughout the West, including high elevation forests, extending the length of the peak wildfire season.

  • In California, twice as many acres have burned so far this year than had burned by this point last year — and 2020 was California's worst wildfire year on record.
  • “The fire behavior we are seeing on the Bootleg Fire is among the most extreme you can find and firefighters are seeing conditions they have never seen before,” Al Lawson, an incident commander for the fire, said in a statement on Sunday.

Between the lines: Human-caused global warming is a major factor behind the severity, longevity and frequency of the heat waves in the American West and other parts of the world.

  • In addition, studies show that the West is seeing more frequent and larger wildfires as climate change alters precipitation patterns and the timing of the wet and dry seasons.
  • Climate change is also leading to more days with extreme fire weather conditions that feature unusually high temperatures, strong winds, and extremely low humidity values.

What's next: Heat advisories and warnings in effect for the Central Valley of California, where farm workers have been laboring in lethal temperatures, continue on Monday — but temperatures are forecast to be a few degrees lower than they were over the weekend.

  • Other parts of the West are under heat warnings as well.
  • Records that fall are likely to be daily records, rather than all-time milestones.
  • No end to the hot and dry weather pattern across the West, however, is in sight.

Go deeper

Southwest drought is worst on record, NOAA finds

In a stark new report, a team of NOAA and independent researchers found the 2020-2021 drought across the Southwest is the worst in the instrumental record, which dates to 1895.

Why it matters: They also concluded that global warming is making it far more severe, primarily by increasing average temperatures, which boosts evaporation.

Everyone wants to be an influencer

Illustration: Aïda Amer/Axios

The number of people looking to become online influencers has exploded during the pandemic.

Why it matters: Almost anyone can find themselves in a position to become an influencer, and brands are throwing billions of dollars at online content creators.

At least 3 dead after Amtrak train derails in Montana

Photo: Jacob Cordeiro/Twitter

An Amtrak train derailed near Joplin, Montana, resulting in at least three deaths and multiple injuries to passengers and crew on Saturday, per authorities and a company statement.

The big picture: 141 passengers and 16 crew members were estimated to be on the Empire Builder train, traveling from Chicago to Seattle and Portland, when eight of the 10 cars derailed about 4p.m., Amtrak said early Sunday.