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A catastrophic flash flood has devastated communities along the Nepal-Tibet border, leaving nearly 1,500 people missing and killing at least 165, according to preliminary reports from authorities. Many of those still unaccounted for are international tourists, trekkers and pilgrims visiting the Himalayan region. Emergency crews are carrying out a massive search-and-rescue operation across remote mountain valleys where entire settlements, roads and infrastructure have been destroyed. Hundreds of foreign nationals from India, the United States, Australia, the United Kingdom, Canada and other countries are among those reported missing.Wall of water sweeps through Himalayan Valleys
Videos recorded during Wednesday's disaster showed a powerful surge of water and debris rushing through valleys near the Nepal-China border as residents and visitors attempted to escape. The flood overturned vehicles and destroyed homes, roads and energy infrastructure in Nepal. Across the border in Tibet, a major mudslide struck near a crossing, prompting fears of significant casualties. Homes, trees and vehicles were left submerged or buried beneath thick layers of mud and debris. Helicopters operated throughout the day, transporting survivors and supporting rescue teams in areas that were difficult to reach by road. The scale of the disaster has made rescue operations particularly challenging because of the rugged Himalayan terrain and widespread infrastructure damage.Hundreds of foreign tourists reported missing
Nepalese police and tourism officials said approximately 826 people were initially listed as missing in Nepal, including almost 600 foreign nationals. The missing included 177 Indian citizens, 63 Americans, 34 Australians, 33 British nationals and 25 Canadians. On the Tibetan side of the border, Chinese state media reported that at least 558 people remained unaccounted for, including more than 260 foreign nationals. Nepalese authorities said 165 bodies had been recovered by late Wednesday. Chinese media separately reported fatalities in Tibet as rescue teams continued searching affected areas. Many of the people caught in the disaster were travelling to Kailash Mansarovar, a high-altitude pilgrimage destination in Tibet considered sacred by several religions, including Hinduism and Buddhism.Glacier collapse and landslide may have triggered flood
Early speculation suggested that an earthquake might have caused part of a glacier to collapse, producing the destructive flood. However, subsequent analysis challenged that explanation. The US Geological Survey said a seismic signal initially interpreted as a magnitude 4.4 earthquake was instead generated by the collapse of glacial rock and ice and the resulting movement of debris. According to the agency, an earthquake did not occur. Preliminary analysis of Planet Labs satellite imagery also pointed toward a large collapse of ice and rock as the likely trigger. Nepal's disaster management authorities said the event appears to have generated a debris-filled flood in the Lhende River roughly 20 kilometers northeast of the Rasuwagadhi border crossing between Nepal and China. The steep terrain of the Himalayas can amplify the destructive power of landslides, glacial collapses and sudden floods, making downstream communities particularly vulnerable.Survivors describe terrifying escape
People who escaped the disaster described a rapidly approaching torrent carrying enormous quantities of mud and debris. Labourer Bibek Kumal was working downstream from the severely affected Rasuwa district when he saw the flood approaching. He ran as the water rushed through the valley and was eventually swept downstream. Kumal survived after managing to hold on to a tree while water, mud and debris moved around him. Another survivor, 68-year-old Keshav Prasad Baral, described seeing an enormous mass of mud approaching and growing higher as it moved closer. Baral attempted to escape with his wife, but she was swept away. He was rescued several hours later by helicopter, while his wife remained missing. Such accounts illustrate how quickly the disaster unfolded, leaving residents and tourists with little time to reach safer ground.Entire villages and markets destroyed
David Fisher, head of the Nepal delegation of the International Federation of Red Cross and Red Crescent Societies, said entire villages and commercial areas had been destroyed. The disaster has also damaged electricity and hydropower infrastructure, leaving some affected communities without power or reliable communications. In Nepal, relatives gathered outside an army training centre serving as a base for helicopter rescue missions. Families from areas including Nuwakot and Dhading waited for information about missing relatives. Police officers recorded names of missing people outside the facility while mobile phone flashlights provided illumination because electricity remained unavailable.International rescue and emergency assistance expands
The international response began to grow as the scale of the Nepal-Tibet flood became clearer. United Nations Secretary-General António Guterres said UN teams and partner organisations were mobilising personnel and emergency supplies to assist affected communities. The United States announced $500,000 in emergency assistance. Chinese authorities deployed nearly 800 emergency personnel and around 150 vehicles to support rescue operations in Tibet, according to state media. Search teams were also equipped with sniffer dogs and boats. Chinese President Xi Jinping called for maximum efforts to locate and rescue people who remained missing.Tour groups search for missing travellers
Tour operators are also attempting to account for clients caught in the disaster. Himalayan Glacier reported that 47 people connected to one of its groups in Nepal were missing, including two children. The group reportedly included 15 Australians, 10 Canadians, nine Nepalese citizens, eight Americans, two British nationals, two Singaporeans and one dual Russian-American citizen. Australian Prime Minister Anthony Albanese expressed concern for people awaiting information about relatives and acknowledged the difficulties authorities faced in confirming the status of missing travellers.Rescue operations continue across Nepal and Tibet
With nearly 1,500 people initially reported missing across Nepal and Tibet, rescue teams face a difficult operation across a vast and mountainous disaster zone. Destroyed roads, damaged power systems, unstable slopes and thick deposits of mud and debris are complicating efforts to reach isolated communities. Authorities are continuing to search for survivors while assessing the full extent of the destruction. The death toll could rise as emergency workers gain access to areas that remain cut off following one of the region's most devastating recent flash floods. The disaster also highlights the vulnerability of Himalayan communities and tourism routes to sudden landslides, glacial collapses and debris flows, particularly in steep valleys where fast-moving water can reach populated areas with little warning.
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