The deluge capped a summer of extreme climate events, from deadly heatwaves to wildfires. We must take action now

For millennia, the high peaks of the Himalayas were held together by an invisible, frozen cement – permafrost and glacial ice that bound ancient rock into seemingly unshakable fortresses. But as the planet continues to warm, this alpine glue is liquefying.

The glacial collapse and deluge in Nepal and Tibet was not a freak weather event; it was the structural failure of a mountain itself, nature’s latest commentary on the deadly consequences of human-caused planetary warming. And it was the exclamation point on a summer of extremes, illustrating with a sole unnatural disaster the apocalyptic future that lies in store if we fail to take dramatic climate action.

As families await news of missing loved ones, the disaster is a stark reminder of how the climate crisis is creating a fast-growing threat. Plus, the town considered India’s ‘Jurassic Park’

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It has been hard not to despair while watching the ruinous floods swallow parts of Nepal, and harder, still knowing that the agony compounds each passing day for dozens of Indian families whose members remain unaccounted for.

Social media is awash with desperate pleas, photos and details of the young and old, men and women, from Mumbai to Kolkata, posted by families searching for traces of life. The disaster unfolded when a melting glacier slammed into the valley below, unleashing a deadly cascade of rock and ice down the Bhote Kashi River, which flows from Tibet into Nepal.

In Alaska, the Himalayas, the Andes, Greenland, and perhaps also the Alps, deadly chain reactions are just waiting to be triggered

You may not have felt it, but the earth beneath our feet is getting twitchier, and global heating is to blame. As temperatures surge and climate breakdown accelerates, interactions between climate and geology are becoming ever more apparent – as marked by last week’s horrific events in Nepal and Tibet. We still have a bit of a blind spot when it comes to the idea that a changing climate can impact what scientists call the geosphere, but the evidence has long been incontestable.

In 2021, a similar deluge ripped through a series of mountain valleys in the Indian Himalayan state of Uttarakhand, severely damaging two hydroelectric power plants and taking about 200 lives. In August 2025, a colossal landslide in an Alaskan fjord created a 500-metre-high wave in an area frequented by cruise ships. A few months earlier, the collapse of part of a glacier in Switzerland’s Valais canton caused a debris-laden torrent that destroyed and buried most of the already evacuated village of Blatten.

Bill McGuire is professor emeritus of geophysical and climate hazards at UCL. His latest book is The Fate of the World – a History and Future of the Climate Crisis

Flash flooding in Arizona tourist destination was likely triggered by compounding climate factors, such as drought and warming in Pacific Ocean

• Remote Grand Canyon lodge hit by deadly flash flood boasts fabled history

A deadly flash flood in the Grand Canyon over the weekend was likely driven by a confluence of climate factors, including drought, wildfire scarring and warming temperatures in the Pacific Ocean that can supercharge storms.

At least two people have died, nearly 80 people were rescued and one remained unaccounted for after a surge of water and debris swept through the immensely popular tourist destination on Saturday, fueled by torrents of rain that hit the national park’s Bright Angel Creek area.

Flash flooding in Arizona tourist destination was probably triggered by compounding climate factors, such as drought and warming in Pacific Ocean

• Remote Grand Canyon lodge hit by deadly flash flood boasts fabled history

A deadly flash flood in the Grand Canyon over the weekend was probably driven by a confluence of climate factors, including drought, wildfire scarring and warming temperatures in the Pacific Ocean that can supercharge storms.

At least two people have died, nearly 80 people were rescued and one remained unaccounted for after a surge of water and debris swept through the immensely popular tourist destination on Saturday, fueled by torrents of rain that hit the national park’s Bright Angel Creek area.

Phantom Ranch, set up by Teddy Roosevelt, has welcomed exhausted hikers to its famed cabins for over a century

• Two dead and nearly 80 rescued after Grand Canyon flash flood

Phantom Ranch has been a solitary refuge visited by some of the most famous names of history. More typically, it’s been a beacon for the half-collapsed, exhausted and overheated hikers trudging down the Grand Canyon for more than a century.

The sole lodge at the very bottom of the Grand Canyon, the cabins long had a near mythical reputation. Located along the Bright Angel Creek, which tumbles into the mighty Colorado River at the base of the canyon, they served as a reminder of the long history of one of America’s most spectacular but savage environments.

Officials say one person still unaccounted for as forecast heavy rain and thunderstorms threaten further flooding

A second death was confirmed by National Park Service officials on Monday after a flash flood sent a surge of water and debris through an area of the Grand Canyon over the weekend.

Dozens of visitors had to be evacuated by helicopter during the deluge, which consumed trails and infrastructure. Nearly 80 people were rescued and one person is still unaccounted for, as more heavy rain and thunderstorms in the forecasts threaten additional debris flows, flash floods or rock falls, the NPS said in a statement.

Majority of missing Australians were near Gyirong Port minutes before impact. Rescuers say the area is now destroyed, covered in metres of silt and debris

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It has been almost a week since the catastrophic floods in Nepal and not even a vehicle can get into the area where the majority of missing Australians were last heard from.

Gyirong Port, the border area between Nepal and China, was the first to be hit. Images from Chinese rescue teams who have managed to get in by helicopter or hiking show the area has been completely flattened. The immigration building, the power lines, everything, just wiped away.

Workers thought to be stuck in underground areas at 11 sites after last week’s devastating flash floods

Rescue teams are working to reach more than 900 missing hydropower workers, hundreds of whom are feared trapped in the tunnels and underground areas of 12 hydropower projects in Nepal after the devastating flash floods, ​the ⁠country’s disaster ​management authority has said.

The death toll from the ⁠unprecedented deluge of ice, rock, mud ​and debris on Wednesday last week has risen to 939 people, with 16 more dead reported in Tibet. More than 4,400 are missing on the two sides of the border.

Officials say one person still unaccounted for as forecast heavy rain and thunderstorms threaten further flooding

A second death was confirmed by National Park Service officials on Monday after a flash flood sent a surge of water and debris through an area of the Grand Canyon over the weekend.

Dozens of visitors had to be evacuated by helicopter during the deluge, which consumed trails and infrastructure. Nearly 80 people were rescued and one person is still unaccounted for, as more heavy rain and thunderstorms in the forecasts threaten additional debris flows, flash floods or rock falls, the NPS said in a statement.

Kameron Glasgow of Florida honors wife Kenya and daughter Kennedi at local vigil after last week’s tragedy

A Florida man whose wife and toddler daughter were killed by a lightning strike while he was near them recently has implored people to “hold … tight” to their loved ones.

Kameron Glasgow made that arresting remark to local media at a weekend gathering honoring the memories of his wife, Kenya, and two-year-old daughter Kennedi after they died on 23 August from an exceedingly rare cause.

More than 200mm of rain forecast in parts of South Korea, while parts of southern Europe to be 10C above average

South Korea’s prime minister, Han Seong-sook, met officials to prepare for heavy rain expected this week, with rainfall totals across central and northern parts of the country forecast to exceed 200mm in some areas.

South Korea was battered by heavy rainfall earlier this month and some areas were particularly hard hit. Over the weekend further thunderstorms pushed into the region and these are expected to cause disruption through Monday. This heavy rain is caused by a series of severe thunderstorms that developed over the Yellow Sea, on the western side of South Korea, and will slowly push eastwards on Monday before easing on Tuesday. These storms have been strengthened by the very warm Yellow Sea, which now has a surface temperature of 29C, 4C above the climatological average.

Workers thought to be stuck in underground areas at 11 sites after last week’s devastating flash floods

Rescue teams are working to reach more than 900 missing hydropower workers, hundreds of whom are feared trapped in the tunnels and underground areas of 12 hydropower projects in Nepal after the devastating flash floods, ​the ⁠country’s disaster ​management authority has said.

The death toll from the ⁠unprecedented deluge of ice, rock, mud ​and debris on Wednesday last week has risen to 939 people, with 16 more dead reported in Tibet. More than 4,400 are missing on the two sides of the border.

Dozens evacuated after flash-flood event near Bright Angel Canyon and Phantom Ranch, officials say

One person died and about 15 people were missing or unaccounted for after a major flash flood swept through the Grand Canyon national park in Arizona on Saturday afternoon, according to the National Park Service.

The flash-flood event occurred in the area of Bright Angel Canyon and the Phantom Ranch, where park staff and the Arizona department of public safety had evacuated more than 60 people as of Sunday morning.

Dozens evacuated after flash-flood event near Bright Angel Canyon and Phantom Ranch, officials say

One person died and about 15 people were missing or unaccounted for after a major flash flood swept through the Grand Canyon national park in Arizona on Saturday afternoon, according to the National Park Service.

The flash-flood event occurred in the area of Bright Angel Canyon and the Phantom Ranch, where park staff and the Arizona department of public safety had evacuated more than 60 people as of Sunday morning.

Remnants from tropical storm could cause heavy rainfall on Leeward Islands and affect Virgin Islands, Puerto Rico and Hispaniola

Remnants of Tropical Storm Dolly, which has been downgraded to an “open tropical wave”, were moving still across the Atlantic Ocean toward the Leeward Islands, and could bring heavy rainfall to parts of the Caribbean this weekend, the US National Hurricane Center (NHC) said on Friday..

Dolly, which formed on Thursday, had maximum sustained winds of near 40mph (65km/h) with higher gusts on Friday morning. Later on Friday, forecasters said that Dolly was no longer a Tropical Storm, and had “become an open tropical wave”.

Remnants from tropical storm could cause heavy rainfall on Leeward Islands and affect Virgin Islands, Puerto Rico and Hispaniola

Remnants of Tropical Storm Dolly, which has been downgraded to an “open tropical wave”, were moving still across the Atlantic Ocean toward the Leeward Islands, and could bring heavy rainfall to parts of the Caribbean this weekend, the US National Hurricane Center (NHC) said on Friday..

Dolly, which formed on Thursday, had maximum sustained winds of near 40mph (65km/h) with higher gusts on Friday morning. Later on Friday, forecasters said that Dolly was no longer a Tropical Storm, and had “become an open tropical wave”.

Flash flooding and mudslides in Ishikawa and Toyama prefectures, while convective storms hit western Europe

After an “unprecedented” deluge in Chiba in mid-August, Japan has experienced further extreme rainfall in recent days. Moisture from the Sea of Japan brought relentless heavy rain to the prefectures of Ishikawa and Toyama on Thursday.

In Himi, Toyama, 361.5mm of rain fell in 24 hours, equivalent to half the average annual rainfall in London and Paris. Several rivers burst their banks, triggering flash floods and mudslides, felling and damaging buildings.

Risk of fresh flooding had forced rescue teams to withdraw as residents rushed up hills to escape possible river surge

• Nepal-Tibet flash flood – latest updates

• Visual guide: how the deadly flooding unfolded

• Tell us: have you been affected by the flash floods?

Rescuers searching for survivors of deadly flash floods on the Nepal-Tibet border have resumed their efforts after suspending operations when a debris dam burst its bank on Friday, increasing the risk of fresh flooding.

Residents in Nepal’s Rasuwa district, on the border with Tibet, were seen rushing up hillsides ⁠on Friday to escape a possible surge in the river, ⁠according to witnesses. Fears of another flood came as authorities in Nepal and China said that at least 543 people had been killed in the disaster.