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The Ferguson Fire burns in the Sierra National Forest on the western edge of Yosemite National Park, seen on July 16, 2018. Credit: Blake Scott/National Park Service

The Ferguson Fire burning in the rugged Sierra National Forest next to Yosemite National Park is causing air quality within the park to plunge to hazardous levels.

Why it matters: The fire has already burned about 17,300 acres, and was only 5% contained as of July 17. The smoke is causing unhealthy amounts of particulate pollution to drift into the park, and is contributing to poor visibility as well.

From the scene: Livecams from the park on July 18 showed obscured views of iconic landmarks such as El Capitan. The National Park Service is warning visitors to Yosemite to "be prepared to limit any strenuous outdoor activity during the periods of high concentration" of smoke.

The Ferguson Fire is burning in a heavily wooded area on the western edge of the park. Trees in this region have been weakened or killed by relentless drought conditions, making them especially vulnerable to wildfire.

Threat level: Measurements of particulate matter 2.5 — which are less than 2.5 microns across, or less than the width of a human hair — in the park have spiked to unsafe levels, based on standards set by the Environmental Protection Agency. Prolonged exposure to particulate matter 2.5 can contribute to heart attacks, strokes, and high blood pressure, among other ailments.

The big picture: The Ferguson Fire is one of 61 large fires burning across the U.S. as of Wednesday, most of which are in the West. So far this year, about 3.5 million acres have burned across the country, which is about 200,000 acres above average.

  • In recent decades, scientists have observed a trend toward larger wildfires and longer fire seasons in the West, which studies have shown is partly linked to the effects of climate change.

The bottom line: The Ferguson Fire, like many other blazes in the West, is unlikely to be extinguished anytime soon. The weather forecast shows continued hot and dry conditions, with scattered thunderstorms that could both help firefighters by dropping rain, and hinder them by causing erratic winds and lightning strikes that start new blazes.

This means that the air quality problem within Yosemite is likely to continue. It's also possible that the fire could spread into a portion of the national park, which would force further evacuations and road closures at the height of the summer tourism season.

Go deeper

Scoop: Gina Haspel threatened to resign over plan to install Kash Patel as CIA deputy

CIA Director Gina Haspel. Photo: Win McNamee/Getty Images

CIA Director Gina Haspel threatened to resign in early December after President Trump cooked up a hasty plan to install loyalist Kash Patel, a former aide to Rep. Devin Nunes (R-Calif.), as her deputy, according to three senior administration officials with direct knowledge of the matter.

Why it matters: The revelation stunned national security officials and almost blew up the leadership of the world's most powerful spy agency. Only a series of coincidences — and last minute interventions from Vice President Mike Pence and White House counsel Pat Cipollone — stopped it.

Updated 6 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Health: Coronavirus deaths reach 4,000 per day as hospitals remain in crisis mode — CDC warns highly transmissible coronavirus variant could become dominant in U.S. in March.
  2. Politics: Biden says, "We will manage the hell out of" vaccine distribution — Biden taps ex-FDA chief to lead Operation Warp Speed amid rollout of COVID plan — Widow of GOP congressman-elect who died of COVID-19 will run to fill his seat.
  3. Vaccine: Battling Black mistrust of the vaccines"Pharmacy deserts" could become vaccine deserts — Instacart to give $25 to shoppers who get vaccine.
  4. Economy: Unemployment filings explode againFed chair: No interest rate hike coming any time soon —  Inflation rose more than expected in December.
  5. World: WHO team arrives in China to investigate pandemic origins.

John Weaver, Lincoln Project co-founder, acknowledges “inappropriate” messages

John Weaver aboard John McCain's campaign plane in February 2000. Photo: Robert Schmidt/AFP via Getty Images)

John Weaver, a veteran Republican operative who co-founded the Lincoln Project, declared in a statement to Axios on Friday that he sent “inappropriate,” sexually charged messages to multiple men.

  • “To the men I made uncomfortable through my messages that I viewed as consensual mutual conversations at the time: I am truly sorry. They were inappropriate and it was because of my failings that this discomfort was brought on you,” Weaver said.
  • “The truth is that I'm gay,” he added. “And that I have a wife and two kids who I love. My inability to reconcile those two truths has led to this agonizing place.”