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Line Fire in Southern California burns over 37,000 acres, forcing evacuations in Big Bear

Thousands fled their homes as the Line Fire tore through more than 36,000 acres and authorities arrested a man on suspicion of starting the massive Southern California blaze. 
Since the wildfire started around 6 p.m. Thursday, mandatory evacuations have been expanded to include several communities this past week as it exploded in size. It first sparked in San Bernardino County, along Base Line and Aplin streets in the city of Highland.
As of Thursday morning, the blaze is an estimated 37,207 acres and is 18% contained, according to Cal Fire, or the California Department of Forestry and Fire Protection. It’s currently the fifth largest wildfire in California so far this year. 
On Tuesday, authorities announced Justin Wayne Halstenberg, 34, of Norco was arrested on suspicion of causing the fire.
The Line Fire is one of three major wildfires burning across multiple counties in Southern California over the past few days. 
The Bridge Fire in Los Angeles and San Bernardino counties, which exploded in size this week, is currently the third-largest wildfire in the state so far this year. The last of the three, the Airport Fire, destroyed several homes Tuesday night as it also kept spreading. It’s currently the seventh-largest so far in 2024, according to updates from Cal Fire current as of Wednesday morning.
Over the past week, firefighters’ efforts against the Line Fire have been complicated by challenges including hot, dry conditions coupled with steep, rugged terrain and even smoke from the blaze creating clouds similar to those that come with thunderstorms. This wildfire-induced storm system strengthened winds which then fanned the flames and caused them to spread even further.
“The Line Fire continues to grow in steep terrain with difficult access, especially in the Big Bear area,” Cal Fire officials said in an update just before 6 a.m. Wednesday. “Near vertical slopes make putting in control lines challenging.”
Last week, the blaze surpassed 7,000 acres on Saturday before quickly scorching through thousands more acres over the weekend and in the days since. More than 3,000 firefighters are battling the flames through efforts by air and ground, flying helicopters through thick clouds of smoke as bright red, actively burning flames tear through hillsides in mountain areas.
Some structures have been destroyed, with the damage still being assessed, and there have been three injuries reported, authorities said. There has been no loss of life, San Bernardino County Sheriff Shannon Dicus said Wednesday.
“We’re going to do our very best to keep it that way,” Dicus said. “The fire behavior in this fire — from the briefings that we’ve had from our fire partners — has been some of the strangest and let’s just say ‘not typical’ of fire science is what’s being explained to me.”
“And we are constantly flexing and moving,” he said.
On Tuesday, people in communities like Arrowbear Lake, Forrest Falls and Running Springs were just some of the residents facing mandatory evacuation orders, which have expanded significantly over the past week.
“My advice for people that don’t want to leave is to get off the mountain,” Cal Fire Battalion Chief Brent Pascua said. “Nothing is worth it — your lives, your families’ lives are not worth it.”
“It’s just smarter to leave, get off the mountain before it becomes an order,” Pascua said, urging people to flee even if they are only under a voluntary evacuation warning rather than a full-on, mandatory order. “It’s better to do it early.”
About 65,500 structures are still being threatened as of Wednesday, according to Cal Fire.
Jennifer Riser, who lives in the evacuated community of Runnings Springs, said it was “scary” waiting to hear whether she would be forced to leave. Before long, she was told she had to go.
“We just packed up our cats about an hour ago and only because we were told to,” Riser said Tuesday.
Last week, just a day after the fire broke out, people waited to hear whether they would have to evacuate. 
“We’re just kind of on the edge, just waiting,” resident Diya Hirpara said Friday, as she bought groceries and tried to prepare.
While firefighters initially managed to keep the blaze within the San Bernardino National Forest, winds started to sweep it toward homes — leading to the first set of mandatory evacuation orders being issued Saturday as the fire surpassed 7,000 acres that afternoon.
Law enforcement officials said they launched an investigation into Halstenberg on Sept. 6 and found evidence inside his home and vehicle linking him to the wildfire upon serving a search warrant. Investigators have not said how they believe he started the fire.
“While we’re still in the thrust of the preliminary investigation, we believe this was intentional,” Sheriff Dicus said Wednesday.
Halstenberg has worked for FedEx as a third-party delivery driver, according to San Bernardino County Sheriff’s Department Detective Jacob Hernandez. Authorities have not identified a suspected motive behind the alleged arson.
Dicus said two other people suspected of breaking into homes in an evacuated area were also taken into custody. 
He issued a stern warning to those who try looting homes where residents have fled and said law enforcement officers are standing by.
“We live in these communities, we’ve also been evacuated and we’re going to make sure that the public knows that their homes are our homes,” Dicus said. “And I’m drawing a line in the sand when it comes to things like this. If you’re going to be an opportunist in San Bernardino County, and we catch you, you are going to jail.”
Below is a list of evacuation orders. The latest information on road closures and more can be found here.

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