It’s not ‘traditional’ wildfire season – so why have the California fires spread so quickly?
A real-life drama is unfolding just outside Hollywood. Ferocious wildfires have ballooned at an “alarming speed”, in just a matter of hours. Why?
What caused the California wildfires?
There are currently three wildfires torching southern California. The causes of all three are still being investigated.
The majority (85%) of all forest fires across the United States are started by humans, either deliberately or accidentally, according to the US Forest Service.
But there is a difference between what ignites a wildfire and what allows it to spread.
However these fires were sparked, other factors have fuelled them, making them spread quickly and leaving people less time to prepare or flee.
The main culprit so far is the Santa Ana winds.
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LA residents face ‘long and scary night ahead’
What are Santa Ana winds?
So-called Santa Ana winds are extreme, dry winds that are common in LA in colder winter months.
The California Department of Forestry and Fire Protection warned strong Santa Ana winds and low humidity are whipping up “extreme wildfire risks”.
Winds have already topped 60mph and could reach 100mph in mountains and foothills – including in areas that have barely had any rain for months.
It has been too windy to launch firefighting aircraft, further hampering efforts to tackle the blazes.
These north-easterly winds blow from the interior of Southern California towards the coast, picking up speed as they squeeze through mountain ranges that border the urban area around the coast.
They blow in the opposite direction to the normal onshore flow that carries moist air from the Pacific Ocean into the area.
The lack of humidity in the air parches vegetation, making it more flammable once a fire is started.
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Wildfires spread as state of emergency declared
The ‘atmospheric blow-dryer’ effect
The winds create an “atmospheric blow-dryer” effect that will “dry things out even further”, said Daniel Swain, a climate scientist at University of California, Los Angeles (UCLA).
The longer the extreme wind persists, the drier the vegetation will become, he said.
“So some of the strongest winds will be at the beginning of the event, but some of the driest vegetation will actually come at the end, and so the reality is that there’s going to be a very long period of high fire risk.”
What role has climate change played?
California governor Gavin Newsom said fire season has become “year-round in the state of California” despite the state not “traditionally” seeing fires at this time of year – apparently alluding to the impact of climate change.
Scientists will need time to assess the role of climate change in these fires, which could range from drying out the land to actually decreasing wind speeds.
But broadly we know that climate change is increasing the hot, dry weather in the US that parches vegetation, thereby creating the fuel for wildfires – that’s according to scientists at World Weather Attribution.
But human activities, such as forest management and ignition sources, are also important factors that dictate how a fire spreads, WWA said.
Read more:
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Pic: Reuters
Southern California has experienced a particularly hot summer, followed by almost no rain during what should be the wet season, said Professor Alex Hall, also from UCLA.
“And all of this comes on the heels of two very rainy years, which means there is plenty of fuel for potential wildfires.
“These intense winds have the potential to turn a small spark into a conflagration that eats up thousands of acres with alarming speed – a dynamic that is only intensifying with the warmer temperatures of a changing climate.”
The flames from a fire that broke out yesterday evening near a nature reserve in the inland foothills northeast of LA spread so quickly that staff at a care home had to push residents in wheelchairs and hospital beds down the street to a car park.
World
Trump criticises Putin after potentially ‘historic’ meeting with Zelenskyy before Pope’s funeral
Donald Trump has criticised Vladimir Putin and suggested a shift in his stance towards the Russian president after a meeting with Volodymyr Zelenskyy before the Pope’s funeral.
The Ukrainian president said the one-on-one talks could prove to be “historic” after pictures showed him sitting opposite Mr Trump, around two feet apart, in the large marble hall inside St Peter’s Basilica.
The US president said he doubted his Russian counterpart’s willingness to end the war after leaving Rome after the funeral of Pope Francis at the Vatican.
Follow live updates: 200,000 mourn at Vatican
In a post on his Truth Social platform, he said “there was no reason” for the Russian president “to be shooting missiles into civilian areas, cities and towns, over the last few days”.
The two leaders held talks before attending the Pope’s funeral
He added: “It makes me think that maybe he doesn’t want to stop the war, he’s just tapping me along, and has to be dealt with differently, through ‘Banking’ or ‘Secondary Sanctions?’ Too many people are dying!!!”
The meeting between the US and Ukrainian leaders was their first face-to-face encounter since a very public row in the Oval Office in February.
Mr Zelenskyy said he had a good meeting with Mr Trump in which they talked about the defence of the Ukrainian people, a full and unconditional ceasefire, and a durable and lasting peace that would prevent the war restarting.
Other images released by the Ukrainian president’s office show Sir Keir Starmer and French President Emmanuel Macron were present for part of the talks, which were described as “positive” by the French presidency.
Mr Zelenskyy‘s spokesman said the meeting lasted for around 15 minutes and he and Mr Trump had agreed to hold further discussions later on Saturday.
The world leaders shared a moment before the service
Donald Trump and Volodymyr Zelenskyy meet in the Basilica
But the US president left Rome for Washington on Air Force One soon after the funeral without any other talks having taken place.
The Ukrainian president’s office said there was no second meeting in Rome because of the tight schedule of both leaders, although he had separate discussions with Mr Starmer and Mr Macron.
The French president said in a post on X “Ukraine is ready for an unconditional ceasefire” and that a so-called coalition of the willing, led by the UK and France, would continue working to achieve a lasting peace.
There was applause from some of the other world leaders in attendance at the Vatican when Mr Zelenskyy walked out of St Peter’s Basilica after stopping in front of the pontiff’s coffin to pay his respects.
Donald Trump and the Ukrainian president met for the first time since their Oval Office row. Pic: Reuters
Sir Tony Brenton, the former British ambassador to Russia, said the event presents diplomatic opportunities, including the “biggest possible meeting” between Mr Trump and the Ukrainian leader.
He told Sky News it could mark “an important step” in starting the peace process between Russia and Ukraine.
Professor Father Francesco Giordano told Sky News the meeting is being called “Pope Francis’s miracle” by members of the clergy, adding: “There’s so many things that happened today – it was just overwhelming.”
The bilateral meeting comes after Mr Trump’s peace negotiator Steve Witkoff held talks with Mr Putin at the Kremlin.
They discussed “the possibility of resuming direct negotiations between Russia and Ukraine”, Kremlin aide Yuri Ushakov said.
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Russia and Ukraine have not held direct talks since the early weeks of the war, which began in February 2022.
Mr Trump has claimed a deal to end the war is “very close” and has urged Mr Zelenskyy to “get it done” in a post on his Truth Social platform.
He has previously warned both sides his administration would walk away from its efforts to achieve a peace if the two sides do not agree a deal soon.
Meanwhile, the Polish armed forces said a Russian military helicopter violated its airspace over the Baltic Sea on Friday evening.
“The nature of the incident indicates that Russia is testing the readiness of our air defence systems,” they said in a post on X.
On an extraordinary day, remarkable pictures on the margins that capture what may be a turning point for the world.
In a corner of St Peter’s Basilica before the funeral of Pope Francis, the leaders of America and Ukraine sit facing each other in two solitary chairs.
They look like confessor and sinner except we cannot tell which one is which.
Leaning forward hands together in their laps, Donald Trump and Volodymyr Zelenskyy stare at each other in one photo.
In another, the Ukrainian president seems to be remonstrating with the US president. This is their first encounter since their infamous bust-up in the Oval Office.
The two leaders held talks before attending the Pope’s funeral
Other pictures show the moment their French and British counterparts introduced the two men. There is a palpable sense of nervousness in the way the leaders engage.
We do not know what the two presidents said in their brief meeting.
But in the mind of the Ukrainian leader will be the knowledge President Trump has this week said America will reward Russia for its unprovoked brutal invasion of his country, under any peace deal.
Mr Trump has presented Ukraine and Russia with a proposal and ultimatum so one-sided it could have been written in the Kremlin.
Kyiv must surrender the land Russia has taken by force, Crimea forever, the rest at least for now. And it must submit to an act of extortion, a proposed deal that would hand over half its mineral wealth effectively to America.
The world leaders shared a moment before the service
Afterwards, Zelenskyy said it had been a good meeting that could turn out to be historic “if we reach results together”.
They had talked, he said, about the defence of Ukraine, a full and unconditional ceasefire and a durable and lasting peace that will prevent a war restarting.
The Trump peace proposal includes only unspecified security guarantees for Ukraine from countries that do not include the US. It rules out any membership of Ukraine.
Ukraine’s allies are watching closely to see if Mr Trump will apply any pressure on Vladimir Putin, let alone punish him for recent bloody attacks on Ukraine.
Or will he simply walk away if the proposal fails, blaming Ukrainian intransigence, however outrageously, before moving onto a rapprochement with Moscow.
If he does, America’s role as guarantor of international security will be seen effectively as over.
This could be the week we see the world order as we have known it since the end of the Second World War buried, as well as a pope.
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