LA fires: Data and videos reveal scale of ‘most destructive’ blazes in modern US history
The fires that have been raging in Los Angeles County this week may be the “most destructive” in modern US history.
In just three days, the blazes have covered tens of thousands of acres of land and could potentially have an economic impact of up to $150bn (£123bn), according to private forecaster Accuweather.
Sky News has used a combination of open-source techniques, data analysis, satellite imagery and social media footage to analyse how and why the fires started, and work out the estimated economic and environmental cost.
More than 1,000 structures have been damaged so far, local officials have estimated. The real figure is likely to be much higher.
“In fact, it’s likely that perhaps 15,000 or even more structures have been destroyed,” said Jonathan Porter, chief meteorologist at Accuweather.
These include some of the country’s most expensive real estate, as well as critical infrastructure.
Beachfront properties in Malibu were destroyed by the Palisades fire. Pic: PA
Accuweather has estimated the fires could have a total damage and economic loss of between $135bn and $150bn.
“It’s clear this is going to be the most destructive wildfire in California history, and likely the most destructive wildfire in modern US history,” said Mr Porter.
“That is our estimate based upon what has occurred thus far, plus some considerations for the near-term impacts of the fires,” he added.
The calculations were made using a wide variety of data inputs, from property damage and evacuation efforts, to the longer-term negative impacts from job and wage losses as well as a decline in tourism to the area.
The Palisades fire, which has burned at least 20,000 acres of land, has been the biggest so far.
Sentinel satellite imagery of the Pacific Palisades from space, taken around 15 minutes after the Palisades fire was first reported. The red indicates the area of land that had already burned. Pic: Sentinel Hub
Satellite imagery and social media videos indicate the fire was first visible in the area around Skull Rock, part of a 4.5 mile hiking trail, northeast of the upscale Pacific Palisades neighbourhood.
These videos were taken by hikers on the route at around 10.30am on Tuesday 7 January, when the fire began spreading.
At about the same time, this footage of a plane landing at Los Angeles International Airport was captured. A growing cloud of smoke is visible in the hills in the background – the same area where the hikers filmed their videos.
The area’s high winds and dry weather accelerated the speed that the fire has spread. By Tuesday night, Eaton fire sparked in a forested area north of downtown LA, and Hurst fire broke out in Sylmar, a suburban neighbourhood north of San Fernando, after a brush fire.
These images from NASA’s Black Marble tool that detects light sources on the ground show how much the Palisades and Eaton fires grew in less than 24 hours.
On Tuesday, the Palisades fire had covered 772 acres. At the time of publication of Friday, the fire had grown to cover nearly 20,500 acres, some 26.5 times its initial size.
The Palisades fire was the first to spark, but others erupted over the following days.
At around 1pm on Wednesday afternoon, the Lidia fire was first reported in Acton, next to the Angeles National Forest north of LA. Smaller than the others, firefighters managed to contain the blaze by 75% on Friday.
On Thursday, the Kenneth fire was reported at 2.40pm local time, according to Ventura County Fire Department, near a place called Victory Trailhead at the border of Ventura and Los Angeles counties.
This footage from a fire-monitoring camera in Simi Valley shows plumes of smoke billowing from the Kenneth fire.
Sky News analysed infrared satellite imagery to show how these fires grew all across LA.
The largest fires are still far from being contained, and have prompted thousands of residents to flee their homes as officials continued to keep large areas under evacuation orders. It’s unclear when they’ll be able to return.
“This is a tremendous loss that is going to result in many people and businesses needing a lot of help, as they begin the very slow process of putting their lives back together and rebuilding,” said Mr Porter.
“This is going to be an event that is going to likely take some people and businesses, perhaps a decade to recover from this fully.”
The Data and Forensics team is a multi-skilled unit dedicated to providing transparent journalism from Sky News. We gather, analyse and visualise data to tell data-driven stories. We combine traditional reporting skills with advanced analysis of satellite images, social media and other open source information. Through multimedia storytelling we aim to better explain the world while also showing how our journalism is done.
A Mexican navy ship has hit the Brooklyn Bridge during a promotional tour in New York City.
The New York Fire Department said authorities were responding to injuries but had no details about how many people might have been hurt or whether they were on the vessel or on the bridge.
Sky’s US partner network NBC News reports that at least three people were seriously injured in the incident.
The Mexican navy said in a post on X that the Cuauhtemoc, an academy training vessel, was damaged in the accident, which has prevented it from continuing its voyage.
Eyewitness video of the collision posted online showed the mast of the ship, which was flying a large Mexican flag, scraping the underneath of the bridge.
Pic: AP
The vessel then drifted toward the edge of the river as onlookers scrambled away from shore.
The Mexican navy said the status of personnel and material was under review by naval and local authorities, which were providing assistance.
The Cuauhtemoc is about 297ft long and 40ft wide, according to the Mexican navy. It sailed for the first time in 1982.
Pic: AP
Each year, it sets out at the end of classes at the naval military school to finish cadets’ training.
It left the Mexican port of Acapulco, on the Pacific coast, on 6 April with 277 people onboard, the navy said at the time.
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One person has died in a bomb explosion near a reproductive health clinic in California, authorities have said.
The incident took place in Palm Springs, a city two hours east of Los Angeles, and is being investigated as a possible car explosion.
The city’s mayor Ron DeHarte said one person died in the blast, adding that the bomb was “either in or near” a vehicle. The deceased’s identity is not known, Palm Springs police said.
Dr Maher Abdallah, who runs the American Reproductive Centers clinic, told the Associated Press his facility was damaged but all staff were safe and accounted for.
The explosion damaged the office space where the practice conducts patient consultations, but the IVF lab and stored embryos were unharmed, he added.
“I really have no clue what happened,” he said. “Thank God today happened to be a day that we have no patients.”
Debris covers the ground after the explosion. Pic: ABC7 Los Angeles/AP
In a statement posted on Facebook the clinic said it was “heartbroken” to learn someone died in the explosion and added: “Our deepest condolences go out to the individuals and families affected.”
It continued: “Our mission has always been to help build families, and in times like these, we are reminded of just how fragile and precious life is.
“In the face of this tragedy, we remain committed to creating hope – because we believe that healing begins with community, compassion, and care.
The clinic will be fully operational on Monday, it added.
“This moment has shaken us – but it has not stopped us. We will continue to serve with strength, love, and the hope that brings new life into the world,” the statement concluded.
Pic: ABC7 Los Angeles/AP
The Palm Springs city government said in a post on Facebook that the explosion happened on North Indian Canyon Drive, near East Tachevah Drive, before 11am local time (6pm GMT).
A burned-out car can be seen in a parking lot behind the building in aerial footage.
The blast caved in the clinic’s roof and blew debris across four lanes of the road.
Another person said he was inside a cannabis dispensary nearby when he felt a massive explosion.
Nima Tabrizi said: “The building just shook, and we go outside and there’s massive cloud smoke.”
Investigators from the FBI and the Bureau of Alcohol, Tobacco, Firearms and Explosives are travelling to the scene to help assess what happened.
California governor Gavin Newsom has been briefed on the explosion, his press office said.
A former FBI director has been interviewed by the US Secret Service over a social media post that Republicans say was a call for violence against President Donald Trump.
James Comey, who led the FBI from 2013 until he was fired in 2017 by Mr Trump during his first term in office, shared a photo of seashells appearing to form the numbers “86 47”.
James Comey later removed the Instagram post. File pic: AP
He captioned the Instagram post: “Cool shell formation on my beach walk.”
Some have interpreted the post as a threat, alleging that 86 47 means to violently remove Mr Trump from office, including by assassination.
Mr Comey later removed the post, saying he thought the numbers “were a political message” and that he was not aware that the numeric arrangement could be associated with violence.
“I didn’t realise some folks associate those numbers with violence. It never occurred to me, but I oppose violence of any kind, so I took the post down,” Mr Comey said.
Mr Trump rejected the former FBI director’s explanation, telling Fox News: “He knew exactly what that meant. A child knows what that meant… that meant assassination.”
Donald Trump Jr accused Mr Comey of “casually calling for my dad to be murdered”.
US Homeland Security Secretary Kristi Noem confirmed in a post on X that Mr Comey had been interviewed as part of “an ongoing investigation” but gave no indication of whether he might face further action.
The Secret Service is part of the Department of Homeland Security.
White House deputy chief of staff Taylor Budowich said Mr Comey had put out “what can clearly be interpreted as a hit on the sitting president of the United States”.
“This is deeply concerning to all of us and is being taken seriously,” Mr Budowich wrote on X.
Another White House official James Blair said the post was a “Clarion Call (…) to terrorists & hostile regimes to kill the President of the United States as he travels in the Middle East”.
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Mr Trump fired Mr Comey in May 2017 for botching an investigation into 2016 democratic presidential nominee Hillary Clinton, the White House said at the time.
While Mr Comey was the director of the FBI, the agency opened an investigation into possible collusion between the Trump 2016 presidential campaign and Russia to help get Mr Trump elected.
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