Rescue Efforts Halted as Flood Danger Grows in Nepal and Tibet

Rescue operations in the border region between Nepal and Tibet have been paused as officials warn of a new, growing danger. According to the Chinese state broadcaster CCTV, a large lake formed by piles of mud and rocks has begun to overflow. This lake was created after a massive wall of debris hit the border town of Gyirong on Wednesday, causing destructive flash floods. Emergency teams that were previously working in the area have been ordered to move back one kilometre for their own safety. Experts fear that if the lake bursts, it could send another wave of water downstream, causing even more damage to areas like Gyirong Port.

In Nepal, the situation remains critical. The death toll has risen to 469, and officials report that more than 1,300 people are still missing. Among the missing are over 500 foreign citizens, including many tourists and trekkers who were visiting the popular mountain region. The Nepal army is working in very difficult conditions to find survivors. One major focus for the military is a tunnel at the Trishuli 3A hydropower project, where workers were trapped by the flood. An army spokesperson, Raja Ram Basnet, stated that while rescuers have already saved 350 people, reaching those still inside the tunnel remains a difficult challenge due to the destruction of local roads and bridges.

The disaster began on Wednesday when a massive chunk of ice broke off from the Langtang Lirung mountain. While early reports suggested an earthquake was the cause, the US Geological Survey later confirmed that the seismic energy was actually generated by the collapse of the glacier and the resulting flow of debris. This mass of ice and rock crashed into the Lhende Khola River, causing water levels to rise by up to nine metres in just 30 minutes. According to the International Centre for Integrated Mountain Development, this sudden rise in water explains why the destruction was so fast and severe.

Scientists believe that the climate crisis is playing a major role in these events. Dr Hamish Pritchard, a glaciologist with the British Antarctic Survey, noted that unusual heatwaves have hit the region recently. These high temperatures likely melted the ice that held the mountain bedrock together, making the glacier unstable. Dr Richard Waller, a senior lecturer at Keele University, explained that as glaciers melt, the ground loses its protective cover and absorbs more heat from the sun. This process weakens the mountain structure, making events like this more likely to happen as global temperatures rise.

This disaster highlights the dangers faced by people living in the high mountains of the Himalayas. Niels Hovius, an expert from the GFZ Helmholtz Centre for Geosciences, explained that flash floods are common in this region because the valleys are narrow. When a large amount of water and mud enters these narrow spaces, it cannot spread out, so it moves with the speed of a car on a highway. Because many people live along these rivers, there is often very little time to escape. While there are some local efforts to build early warning systems, these are currently limited, leaving many communities vulnerable.

Information regarding the full scale of the destruction remains limited, especially on the Chinese side of the border. While Nepal has provided regular updates on the search and rescue efforts, Chinese state media has shared fewer details, focusing primarily on the rescue work being performed by their teams. As of Friday, CCTV reported that nearly 500 Chinese nationals and over 500 foreigners had been moved out of the disaster zone. However, with continued rainfall expected over the next few days, authorities warn that the risk of further flooding will remain high until at least Tuesday. For now, the focus of both nations remains on the safety of their rescue teams and the search for those still missing in the mud and debris.