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This video can not be played Figure caption, Video shows scale of flash flood hitting Nepal-Tibet border By Olivia Ireland and Henry Moore Published 26 August 2026 Updated 3 hours ago Devastating landslides and flash floods on the Nepal-Tibet border have caused widespread damage and left hundreds dead or missing. Search and rescue operations have been ongoing since Wednesday's disaster. Chinese state media has reported significant casualties, while Nepalese officials have described "huge scale loss". But rescuers are on edge because of the threat of further flooding. A lake of rising water which has formed at a site along the border briefly overflowed early on Friday, prompting Chinese authorities to pause rescue efforts temporarily, according to state media. Here is what we know so far. (https://www.bbc.co.uk/news/live/cr0qxd1y219kt) Follow live updates (https://www.bbc.co.uk/news/videos/cp80m87pez3o) Tracing the deadly path of the Nepal-Tibet flash flood Published 18 hours ago (https://www.bbc.co.uk/news/articles/c70d41g40njo) She was about to cross into Tibet for a long-awaited pilgrimage - then her messages stopped Published 1 hour ago What caused the landslide? Initial reports of an earthquake on the Nepal-Tibet border led many to believe that a tremor had caused a landslide, which in turn caused the devastating floods early on Wednesday. However, the US Geological Survey (USGS) later confirmed that the disaster was caused by a "glacial collapse", which is when a glacier or part of a glacier disintegrates. The impact of the collapsed glacier hitting the bottom of a valley was so powerful that it registered a magnitude of 5.2, according to the agency, causing "subsequent catastrophic impacts downstream". Scientists are trying to piece together the exact order of events as rescue efforts continue. Mike Searle, professor of Earth sciences at Oxford University, said the glacier could have collapsed "hours or days" before the flooding hit Nepal and Tibet. He told the BBC: "I think the sheer wave of debris suggests there was a landslide first, the water built up, (which) dammed the river, and then it burst in one huge great flood." (Map showing the path of floodwaters along the Lende Khola, Bhote Koshi and Trishuli rivers in northern Nepal after a glacier collapse near the Tibet border. The collapse sent ice and rock debris into the river, triggering flooding that destroyed a border checkpoint and continued downstream past Syrapu Besi. An inset map locates the affected area north of Kathmandu.) A deluge of material careered towards northern Nepalese towns, including areas popular with mountaineering tourists and pilgrims. The border is around 40 miles (64.4km) north of Nepal's capital city Kathmandu. Footage showed a wall of mud and rock sweeping away buildings, roads and vehicles, as people fled the fast-moving wave of material in the Nuwakot region. In one video, a towering wall of water and mud was seen rushing down a gorge along the Trishuli River and enveloping the Rasuvagadhi Border checkpoint, a multi-storey building. Severe flooding was reported along the Bhote Koshi, Trishuli and Narayani rivers. Deaths were also reported in villages on the Tibetan side of the border. To play this video you need to enable JavaScript in your browser. This video can not be played Figure caption, Watch: What caused the Nepal-Tibet flash floods? The International Centre for Integrated Mountain Development (ICIDMOD) has warned secondary flooding could occur in the coming days as a result of debris that washed into the river systems. The ICIDMOD said they were assessing whether the Trishuli River had been temporarily blocked in narrow sections. If this is the case, it is at risk of forming a landslide dam and a second flood. Separately, China has warned there is a "high risk" that a lake which formed after the landslide may breach its banks, causing a new flood downstream. State media reported that rescue operations were briefly suspended on Friday after the lake, which has formed at the confluence of the Chhochen Khola and Purepu Tsangpo rivers, overflowed - before water levels dropped slightly. How many people are dead and missing? The number of people killed or missing is still becoming clear. At least 489 people had died as of Friday, according to Nepali police, while the country's disaster agency said 977 people were still missing as of Thursday evening. The government has released a list of more than 500 foreign nationals who have been out of contact since the floods hit, including 33 UK nationals. The missing also include 44 members of the Nepali army and 28 police officers, disaster officials have said. Meanwhile, five people have died in Tibet and 558 are missing, China's state broadcaster CCTV reported on Friday It is not clear if any of the missing in the Nepali and Chinese figures have been counted twice. China's Premier Li Qiang arrived in Gyirong on Thursday to supervise rescue and relief operations - the main crossing point for tourists and traffic between China and Nepal. Which countries are the missing tourists from? To play this video you need to enable JavaScript in your browser. This video can not be played Figure caption, Aerial footage shows flash flood on Nepal-Tibet border Tourists from all over the world come to Nepal for its mountains and sacred sites. Reports of those missing include the following: India - Nepal's tourism board says 178 nationals from neighbouring India are missing China - The Chinese foreign ministry says nearly 100 Chinese nationals are missing in Nepal US - the latest update from Nepal's tourist board is that 65 US tourists are known to be among the missing Ukraine - Ukraine's foreign ministry says 53 Ukrainian nationals are missing Malaysia - 51 Malaysians travelling with Fishtail Tours and Travels are missing in the floods, officials say Australia - Australia's foreign minister says 39 Australians are among the missing and there's an "unfortunate possibility" the number will rise UK - Nepal's police say 33 British nationals are missing Canada - a tourism board spokesman in Nepal says 24 Canadians are reported missing Smaller numbers of travellers from South Korea, South Africa, Portugal, the Netherlands and New Zealand are also among the missing. How are governments responding? (Police officers carrying an elderly woman who survived the flash flood at Trishuli in Nuwakot district of Nepal) Image source, Reuters Image caption, Police officers were pictured carrying a survivor from the flash floods in Nepal's Nuwakot district Nepal's Prime Minister Balendra Shah said "the entire nation has been left shocked and deeply distressed" and that officials would coordinate with China on the response. China's President Xi Jinping urged an "all-out" search and promised stronger monitoring and early warning systems to prevent secondary impacts. In neighbouring India, Prime Minister Narendra Modi said his government was "prepared to provide Nepal with all possible types of humanitarian assistance". UN Secretary General António Guterres says he is "saddened by the severe flooding", adding that UN teams and partners are mobilising supplies and personnel in Nepal to support the government-led response. The US has promised $500,000 (£367,982) in aid which will be used to cover emergency shelter, water, sanitation and other relief items for communities affected by the floods. Prime Minister Andy Burnham said the UK has offered £5m to help the Nepalese government and will do "everything we can" to support British nationals in Nepal. Might climate change have played a role? Climate change is known to be driving faster glacier melt in the Hindu Kush Himalaya region. Geologist Daniel Shugar – one of the first experts to suggest Wednesday's flash flooding could have been caused by glacial activity – said glacial thinning caused by global warming could increase the risk of landslides. But it is still too early to link the event to climate change definitively, Shugar, who is based at the University of Calgary in Canada, told the BBC. Simon Cook, a geoscientist at the University of Dundee, said however that climate change "could have an impact". (Interactive or visual content) He said his team believed they had identified where the collapse had occurred. He told the BBC that the lower part of a glacier in Nepal near the Langtang Lirung peak - approximately 15km (9 miles) west of the site of the floods - had collapsed. Cook estimated that the glacier collapsed in a north-westerly direction and then travelled westwards downstream. He told the BBC "permafrost is partially holding some mountainsides together, this permafrost is warming and thawing and degrading so you are going to get more landslides". 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