Rescue efforts continued across Nepal and neighboring China following a catastrophic flash flood triggered by a glacial avalanche in the Himalayan region on Wednesday. The disaster has claimed at least 579 lives in Nepal, with authorities reporting another 2,500 people missing, including over 500 foreigners, many of whom were trekkers, workers, or pilgrims. The death toll on the Chinese side stands at five, with dozens more unaccounted for.

The flooding was caused by a massive collapse of bedrock beneath a glacier high in the mountains, an event that registered a magnitude 5.2 tremor. The resulting avalanche of ice and rock surged into the Bhote Koshi river valley, unleashing a torrent of water that destroyed villages, bridges, highways, and infrastructure across both countries. Nepal’s disaster-management authority described it as the worst disaster since the devastating 2015 earthquake.

In Nepal, the hardest-hit areas include the districts near the Tibet border such as Rasuwa and Rusawa. Rescue teams from the Nepali army, alongside police forces, have deployed more than 15,000 personnel in ongoing search and rescue operations. Over 4,450 people have been rescued to date, with helicopters evacuating survivors from isolated settlements to centers like the Maitili Barracks in Bidur, north of Kathmandu. Many survivors were reportedly found trapped beneath debris or mud, including more than 100 individuals believed to be trapped inside a tunnel at the Upper Trishuli-1 hydropower project. The rescue work there has been hampered by thick mud and structural damage.

Local residents described the flood as a sudden and overwhelming force. One survivor, 95-year-old Indra Kumari Dhakal, recounted how the waters swept away her home and five family members. Another dramatic rescue involved a 94-year-old woman from a care home in Rasuwa who was pulled from the mud by army personnel using heavy machinery.

Nepal’s new administration, led by Prime Minister Balendra Shah since March, has asserted control over immediate relief efforts and declined offers of foreign assistance at this stage. However, damaged roads and more than 80 bridges destroyed or impaired have complicated access to many affected villages. The government has emphasized that the search for survivors remains urgent amid concerns about further flooding.

Authorities are closely monitoring a newly formed glacial lake upstream on the Tibetan Plateau, more than 10 kilometers above the most affected areas at an elevation nearing 3,000 meters. This barrier lake, created by debris from the avalanche, initially raised fears it might overflow and unleash secondary floods. Chinese rescue teams temporarily suspended operations out of precaution but resumed searches as the water volume diminished, according to official reports.

Chinese President Xi Jinping has personally taken steps to oversee the response, holding a moment of silence and dispatching senior official Li Qiang to direct rescue efforts. The flood also severely damaged the Gyirong border crossing, a critical trade route between Nepal and China, and is expected to affect Nepal's economic recovery by disrupting exports and tourism activities, which are vital sources of foreign currency.

Both governments remain on high alert for further natural risks in the region as hundreds of families await news of missing relatives. Rescue operations are ongoing amid challenging terrain and rapidly changing conditions in this disaster that has deeply affected the Himalayan communities on both sides of the border.