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YREKA, Calif. (AP) — Two bodies were found inside a charred vehicle in a driveway in the wildfire zone of a raging California blaze that was among several menacing thousands of homes Monday in the western U.S., officials said. Hot and gusty weather and lightning storms threatened to boost the danger that the fires will keep growing,

The McKinney Fire in Northern California near the state line with Oregon exploded in size to nearly 87 square miles (225 square km) after erupting Friday in the Klamath National Forest, firefighting officials said. It is California's largest wildfire of the year so far and officials have not determined the cause.

The vehicle and the bodies were found Sunday morning in the driveway of a residence near the remote community of Klamath River, the Siskiyou County Sheriff’s Office said in a statement.

Nearly 5,000 Northern California homes and other structures were threatened and an unknown number of buildings have burned, said Adrienne Freeman, a spokesperson for the U.S. Forest Service.

The smoky blaze cast an eerie, orange-brown hue in one neighborhood where a brick chimney stood surrounded by rubble and scorched vehicles on Sunday. Flames torched trees along State Route 96 and raced through hillsides in sight of homes.

Valerie Linfoot's son, a fire dispatcher, called to tell her their family home of three decades in Klamath River had burned. Linfoot said her husband worked as a U.S. Forest Service firefighter for years and the family did everything they could to prepare their house for a wildfire — including installing a metal roof and trimming trees and tall grasses around the property.

“It was as safe as we could make it, and it was just so dry and so hot and the fire was going so fast,” Linfoot told the Bay Area News Group. She said her neighbors have also lost homes.

“It’s a beautiful place. And from what I’ve seen, it’s just decimated. It’s absolutely destroyed,” she told the news group.

Firefighting crews on the ground were trying to prevent the blaze from moving closer to the town of Yreka, population about 7,500. The blaze was about four miles (6.4 kilometers) away as of Monday.

A second, smaller fire in the region that was sparked by dry lightning Saturday threatened the tiny California community of Seiad.

Freeman said "there has been significant damage and loss along the Highway 96 corridor” that runs parallel to the Klamath River and is one of the few roads in and out of the region

She added: “But just how much damage is still being assessed.”

Erratic storms were expected to move through Northern California again on Monday with lightning that threatened to spark new fires in bone dry vegetation, forecasters said. A day earlier, thunderstorms caused Southern California flash flooding that damaged roads in Death Valley National Park.

In northwestern Montana, a fire on the Flathead Indian Reservation that started in grasslands near the town of Elmo on Friday and moved into forested areas had grown to 20 square miles (52 square km) by Monday, fire officials said. Residents of about 20 homes were told to be prepared to evacuate.

In Idaho, the Moose Fire in the Salmon-Challis National Forest has burned on more than 75 square miles (196 square kilometers) in forested land near the town of Salmon and was 21% contained by Sunday.

In California, Gov. Gavin Newsom declared a state of emergency Saturday, allowing him more flexibility to make emergency response and recovery effort decisions and to tap federal aid.

Scientists have said climate change has made the West warmer and drier over the last three decades and will continue to make weather more extreme and wildfires more frequent and destructive.

The U.S. Forest service shut down a 110-mile (177 km) section of the famed Pacific Crest Trail in Northern California and southern Oregon and dozens of hikers in that area were urged to abandon their treks and head to the nearest towns.

Weber reported from Los Angeles. Associated Press reporter Amy Hanson contributed from Helena, Montana to this report.

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