By Alys Davies
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Watch: Train is surrounded by wildfires in Spain
Western France is facing a "heat apocalypse", experts have warned, as extreme temperatures continue to hit much of Europe.
Temperatures could reach record levels in 15 regions of the southwest, with firefighters battling wildfires and thousands forced to evacuate.
Blazes in Spain, Portugal and Greece have forced thousands more to flee.
Record temperatures are also expected in parts of the UK, which has its first ever red extreme heat warning in place.
Wildfires in France in recent days have forced over 24,000 people to flee, with emergency shelters set up for evacuees.
Gironde, a popular tourist region in the southwest, has been hit particularly badly, with firefighters battling to control fires which have destroyed over 14,000 hectares (34,000 acres) of land since last Tuesday.
Jean-Luc Gleyze, president of the Gironde region, told the BBC the fires had continued to grow in La-Teste-de-Buch and Landiras because of the hot and windy weather, making it difficult for firefighters to contain them.
"They have to fight against this fire which is growing and growing, sometimes getting very, very high," he said.
The heatwave has prompted warnings of what one meteorologist described to AFP news agency as "an apocalypse of heat" in some areas of the southwest.
The heatwave has impacted other areas of France too. The city of Brest in north-western Brittany reached 40C (104F), far higher than its usual average for July.
Record-high temperatures were registered across many towns and cities in France, the national weather office said.
In Spain and Portugal, more than 1,000 deaths have been attributed to the heat in recent days.
In Spain's north-western province of Zamora, where a fire has been blazing since the weekend, the body of a shepherd was found in the Sierra de la Culebra mountain range. He is the second fatality of the Zamora fire after a 62-year-old firefighter was killed on Sunday.
In the north-eastern region of Catalonia, fire came right up to the house of Mercedes Pino near Pont de Vilomara.
"I was in bed and through the window I saw a very red light," she told Spanish media. "I ran as fast as I could to the door and I saw a flame burning a caravan we have in front of the door."
Fires also broke out in Castilla y León, Galicia, Castille, Andalusia and Extremadura. Spanish Prime Minister Pedro Sanchez visited Extremadura on Monday.
"Evidently, climate change kills," he said. "It kills people, kills our ecosystem, the biodiversity".
Temperatures in Portugal hit 47C (116F) on Thursday – a record for July.
One third of the mainland still remains at extreme risk of fire, according to the national meteorological office IPMA. This is due to severe or extreme drought conditions virtually everywhere.
Hundreds of people have been evacuated, with authorities anxious to avoid a repeat 2017, when 66 people were killed in fires.
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BBC weather forecaster Ben Rich explains what is driving the ferocious heat across Europe
The heatwave is the second to hit parts of southwest Europe in recent weeks.
Heatwaves have become more frequent, more intense, and last longer because of human-induced climate change. The world has already warmed by about 1.1C since the industrial era began and temperatures will keep rising unless governments around the world make steep cuts to emissions.
Enrique Sanchez, the Dean of the Faculty Environmental Sciences and Biochemistry at The University of Castilla-La Mancha in Spain told the BBC that heatwaves would soon become the norm.
"In the long term, I mean in the following years, there is no way that the temperatures are going to [not] increase, so heat wave events will become more and more common… all along Europe," he said.
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