Why flooding in Spain has been so deadly – and why it could happen again
More than 200 people have died in Spain after nearly a year’s worth of rain fell in a matter of hours.
On Friday, there were at least 205 confirmed deaths in Valencia, two in Castilla La Mancha, and one in Andalusia.
Local authorities issued warnings late on Tuesday, but many say this gave them next-to-no time to prepare for the conditions that had killed dozens by Wednesday.
Here we look at what caused the flooding – and why they could happen again.
How quickly did the floods hit?
Heavy rain had already begun in parts of southern Spain on Monday.
In contrast to areas like Malaga, where residents told Sky News it had been “chucking it down for two days”, the rain did not start in the worst-hit region of Valencia until around 7pm on Tuesday.
At 8pm, people in Valencia received smartphone alerts warning them not to leave their homes.
But by then, many were already trapped in dangerous conditions, particularly in the south of the city where a major road had flooded, leaving drivers stuck in their cars.
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By Wednesday morning, more than 50 people had been found dead.
The Chiva area of Valencia had been hit by 491 litres per square metre of rain in eight hours. Only around 65 l/m2 usually falls in the whole of October.
Storms spread west on Wednesday night and into Thursday, bringing deadly conditions to Andalusia and Castilla La Mancha as well.
What caused them?
Heavy rain is not uncommon across eastern Spain at this time of year.
It’s caused by a weather phenomenon called DANA – ‘depresion aislada en niveles altos’ in Spanish – which translates as ‘isolated low-pressure system at high levels’.
DANA occurs when:
1) Cold air from the north moves south;
2) Warm air then blows over the Mediterranean, rising quickly and forming heavy clouds;
3) The low pressure from the north gets blocked by the high pressure above the water, causing it to slow down or stop completely.
A graphic shows how the DANA phenomenon happens
This creates storm-like conditions that cannot move anywhere else – so the rain falls over the same area for a sustained period of time.
What role did climate change play?
General flash floods and those caused by DANA specifically have struck Spain long before humans started warming the climate.
But climate change is making heavy rain worse, and therefore more dangerous.
That’s because hotter air is able to hold more moisture. So when it rains, it unleashes more water.
The current 1.3C increase in global temperatures since pre-industrial times means the air can carry about 9% more moisture.
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What caused the floods in Spain?
And higher sea surface temperatures in the Mediterranean are a “key driver” of strong storms, said Dr Marilena Oltmanns, research scientist at the National Oceanography Centre in Southampton.
The world is on track for 3.1C warming by the end of this century, which is expected to make rain heavier still, increasing the chances of flash flooding and giving areas little time to respond.
Imperial College London’s lead for its World Weather Attribution (WWA) group Dr Friederike Otto says there is “no doubt about it”.
“These explosive downpours were intensified by climate change,” she says.
Professor Mark Smith, an expert in water science and health at the University of Leeds, adds that hotter summers also dry out the soil in the ground, which means it absorbs less rain – and more of it flows into rivers and lakes – which flood quicker.
Scale of devastation in Paiporta, Valencia on Thursday. Pic: Reuters
Abandoned and mangled cars in Valencia on Thursday. Pic: AP
Will they keep happening?
A red weather warning is in place for the Huelva area of Andalusia until Friday afternoon.
Beyond the warning period, storms are set to continue across parts of Spain for several days.
In the longer term, Dr Marilena Oltmanns says: “Given the long-term warming trend, both in the sea surface temperatures in the Mediterranean region and the global air temperature, we expect the events like the currently observed one in Spain to become more frequent.”
Chiva and the surrounding worst-hit area also suffers from the unfortunate geography of being in a river catchment – where water feeds into the River Turia – and close to the mountains. And is not far from the sea.
That means water has little chance to absorb into the land and so builds up very quickly.
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This makes it all the more imperative that forecasts are accurate, authorities prepare accordingly, and residents respond quickly.
Professor Hannah Cloke, professor of Hydrology at the University of Reading, describes people dying in their cars and being swept away in the street as “entirely avoidable”.
“This suggests the system for alerting people to the dangers of floods in Valencia has failed,” she says.
“People need to understand that extreme weather warnings for floods are very different from regular weather reports. We need to consider flood warnings totally differently, more like fire alarms or earthquake sirens, and less like the way we browse daily weather forecasts on our phones or on the TV.”
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Residents: ‘No one came to rescue us’
Gareth Redmond-King, international analyst at the Energy & Climate Intelligence Unit (ECIU), says Spain’s tragedy should serve as a “wake-up call” to the UK.
“This is not about future events in a far-off place with a dramatically different climate from the UK. Spain is one of our nearest neighbours,” he warns.
World
Charlie Kirk’s widow pays tribute to ‘perfect’ husband and says her cries ‘will echo around the world’
Erika Kirk, the widow of conservative activist Charlie Kirk, described him as a “perfect” husband and father, and said the “evildoers” who assassinated him have no idea what they have unleashed.
“You have no idea of the fire that you have ignited within this wife, the cries of this widow will echo around the world like a battle cry,” she said on Friday in her first public remarks since the assassination.
“If you thought that my husband’s mission was powerful before, you have no idea, you have no idea what you just have unleashed across this entire country and this world, you have no idea.”
Erika Kirk speaks following her husband’s assassination. Pic: Turning Point USA
Mrs Kirk addressed the public after a silent prayer from the studio where her husband recorded his podcast.
She thanked President Donald Trump and vice president JD Vance and his “phenomenal” wife, Usha, for the support, and praised the emergency teams who tried to save her husband’s life.
“Charlie said if he ever ran for office, his top priority would be to revive the American family. That was his priority,” Mrs Kirk said.
“But most of all, Charlie loved his children. And he loved me. With all his heart. And he made sure I knew that every day,” she said.
She called him a “perfect” father and husband, as she held back tears. She also talked about some of his favourite hobbies.
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Vice president JD Vance, his wife Usha, and Erika Kirk exit Air Force Two together. Pic: Reuters
Mrs Kirk said the campus tour that his organisation, Turning Point USA, had started will continue – and urged young people to join her late husband’s political movement.
“I promise I will never let your legacy die,” she said, addressing her husband, vowing to make his movement the “biggest thing this nation has ever seen”.
Mrs Kirk says she doesn’t remember the last time she slept, and shared a story about their daughter when she ran into her arms and asked: “Where’s daddy?”
“What do you tell a three-year-old?”
Mrs Kirk finished her remarks, speaking directly to her husband: “I can’t wait to see you again one day.”
“God bless you all, and may God bless America,” she said as she wrapped up her speech.
World
UK joins NATO operation to bolster Europe’s eastern flank after Russian drone incursions into Poland
NATO is to bolster Europe’s eastern flank, including the use of UK military resources, after Russia’s “reckless and unacceptable” violation of Polish airspace.
NATO Secretary-General Mark Rutte announced operation ‘Eastern Sentry’ on Friday, involving the deployment of equipment on the border with Belarus, Russia and Ukraine to deter potential Russian aggression.
Poland shot down Russian drones which flew over the country on Wednesday, something the military alliance has portrayed as an attempt by Moscow to test NATO’s military response.
It underlines long-held concerns about the potential expansion of Russia’s three-year war in Ukraine.
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Michael Clarke: Russia looking to frighten NATO
Russia said its drones went astray because they were jammed, but European leaders believe the incursions were a deliberate provocation by Russia.
“It’s reckless and unacceptable. We can’t have Russian drones entering allied airspace,” Mr Rutte told a news conference.
Mark Rutte described Russian drones entering Polish airspace as ‘reckless’. Pic: Reuters
He added that allies, including the UK, France, Germany and Denmark, have so far committed to the mission with others set to join.
In a statement, the UK’s Ministry of Defence said: “The UK is fully committed to playing our part in NATO’s Eastern Sentry following the reckless and dangerous airspace violations by Russia”. It added that the details of the UK’s contribution would be announced soon.
Yvette Cooper visited Ukraine on Friday, her first visit to the country since becoming foreign secretary after a cabinet shake-up by Sir Keir Starmer.
Ms Cooper described her trip, which included a meeting with the country’s president, Volodymyr Zelenskyy, as a demonstration of solidarity with Ukraine.
“The UK will not stand idly by as Putin continues his barbaric invasion of Ukraine,” Ms Cooper said, noting what she said was the Russian president’s “complete disregard for sovereignty” by sending drones into NATO airspace.
Yvette Cooper met Volodymyr Zelenskyy in Kyiv on Friday. Pic: Valentyn Ogirenko/Reuters
Pic: Valentyn Ogirenko/Reuters
Prince Harry also made a surprise visit to Kyiv on Friday, where he met with wounded service members.
NATO already has substantial forces in eastern Europe, including thousands of troops, but the alliance did not explain how many additional forces would be involved in the new operation.
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Prince Harry’s surprise visit to Ukraine
Speaking at the alliance’s Brussels headquarters, US General Alexus Grynkewich told reporters the additional resources will enable the alliance to “plug gaps in the line” and concentrate forces wherever they’re needed while improving communications across NATO’s entire eastern flank.
NATO detailed a modest number of additional military assets – including two F-16 fighter jets and a frigate from Denmark, three Rafale fighter jets from France and four Eurofighter jets from Germany.
The announcement also coincided with a joint military exercise involving thousands of Russian and Belarusian troops, which began on Friday.
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Meanwhile, new measures were announced by the UK against Russia on Friday.
They included bans on 70 vessels the UK says are part of Russia’s “shadow fleet” that transports Russian oil in defiance of sanctions.
Some 30 individuals and companies – including Chinese and Turkey-based firms – were also sanctioned for their part in supplying Russia with electronics, chemicals, explosives and other weapons components.
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Donald Tusk, the Polish prime minister, dismissed Donald Trump’s suggestion that the drone incursion into Poland may have been “a mistake”.
“We would also wish that the drone attack on Poland was a mistake,” Mr Tusk wrote on X. “But it wasn’t. And we know it.”
US-led efforts to steer Moscow and Kyiv toward a peace settlement have so far failed to progress.
Kremlin spokesperson Dmitry Peskov said talks to end the war were currently on “pause” even though channels of communication remain open.
Thousands of troops are taking part in a joint military exercise between Russia and Belarus, as tensions with the EU run high following a Russian drone incursion into Polish airspace earlier this week.
The Zapad joint military exercise which began on Friday will involve drills in both Russia and Belarus as well as in the Baltic and Barents seas, the Russian defence ministry said.
Belarusian defence officials initially said about 13,000 troops would participate in the drill, but in May, its defence ministry said that would be cut nearly in half.
It comes just two days after Poland, with support from its NATO allies, shot down Russian drones over its airspace.
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Poland’s Prime Minister Donald Tusk on Friday morning hit back at a suggestion by US President Donald Trump on Thursday that the incursion may have been a “mistake”.
He said in a post on X: “We would also wish that the drone attack on Poland was a mistake. But it wasn’t. And we know it.”
Russia said its forces had been attacking Ukraine at the time of the incursions and that it had not intended to hit any targets in Poland.
Friday also saw Foreign Secretary Yvette Cooper travelling to Ukraine’s capital of Kyiv on the same day the UK announced fresh sanctions against Moscow.
Prince Harry was also in Kyiv for a surprise visit to help with the recovery of military personnel seriously injured in the three-year war with Russia.
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Prince Harry arrives in Kyiv
Ms Cooper, who was appointed foreign secretary last week, posted about her visit on X saying: “The UK’s support for Ukraine is steadfast. I am pleased to be in Kyiv on my first visit as Foreign Secretary.”
The UK’s new sanctions include bans on 70 vessels that Britain says are part of Russia’s “shadow fleet” that transports Russian oil in defiance of sanctions already in place.
Yvette Cooper with Volodymyr Zelenskyy in Kyiv. Pic: Valentyn Ogirenko/PA
Some 30 individuals and companies – including Chinese and Turkey-based firms – have also been sanctioned for their part in supplying Russia with electronics, chemicals, explosives and other weapons components.
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Meanwhile on the frontline, Ukrainian drones struck Russia’s oil-loading Primorsk port overnight, an SBU official said.
The attack caused fires and suspended oil-loading operations, the official added.
Russian defence systems also intercepted and destroyed 221 Ukrainian drones overnight.
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