Truckers abandoned their vehicles and motorists screamed in fear as they came dangerously close to an explosive wildfire in California.
The blaze shut down about 45 miles of a major interstate near the Oregon border that authorities were desperately trying to reopen.
In one video, a passenger in a vehicle screams: “Oh my God, I want to go!” as nearby trees burst into flames.
“I can’t breathe,” the woman says, sobbing. “Please, guys, come put it out.”
Elsewhere in the state, a fire raging in the Sierra Nevada had grown to more than seven square miles after shutting down stretches of US 395, State Route 108 and the Pacific Crest Trail along the eastern spine of California.
The Marine Corps Mountain Warfare Training Center, campgrounds and other areas were evacuated.
Ranchers were told to prepare to move livestock out of the area in Humboldt-Toiyabe National Forest.
The two fires on Thursday were raging just weeks after a blaze in the Redding area killed eight people and burned some 1,100 homes in a frightening start to the fire season.
The two fires destroyed or damaged a combined 8,800 homes and 329 businesses.
“The worst may be yet to come,” Commissioner David Jones warned at a San Francisco news conference, noting California wildfires are typically more destructive after September 1.
Thursday’s blaze along I-5 has blackened 23 square miles, prompting mandatory evacuations.
It was moving rapidly but was still far from any large towns.
California Highway Patrol Officer Jason Morton said officials from a number of agencies were meeting to determine if they can reopen the highway, a key route for commercial trucks.
The highway runs north from the Mexico border through California, Oregon and Washington state to the border with Canada.
The scattered homes and cabins in and around Shasta-Trinity National Forest were under evacuation orders, from the community of Lakehead north to the Siskiyou County line, said Chris Losi, a spokesman for the forest.
“It isn’t a lot of people,” he said.
About 17 trucks were abandoned along the interstate and at least four caught fire, Lieutenant Commander Kyle Foster of the California Highway Patrol’s Mount Shasta office told the Los Angeles Times.
At least two trucks were partially melted.
US Forest Service workers helped the driver of one flaming truck to safety. Truckers, firefighters and others aided more drivers.
Brandon Vaccaro, of the California Department of Forestry and Fire Protection, told the Redding Record Searchlight: “There’s vehicles scattered all over.
“Whatever occurred here was probably pretty ugly for a while.”
About 45 miles of I-5 were closed in both directions, Mr Losi said.
The blaze also delayed Amtrak’s Coast Starlight train service between Sacramento and Oregon.
The city of Dunsmuir, with about 1,500 residents, was about 15 miles from the flames.
Residents were urged to be prepared to leave if the fire threatened.