Emergency rescue personnel mounted a large-scale search and recovery operation on Thursday across northern Nepal and the Tibetan border region following catastrophic flash floods and landslides that killed at least 165 people.
The sudden surge of water, mud, and heavy debris swept away entire villages, commercial market districts, and major infrastructure along the Bhote Koshi and Trishuli river systems.
What caused the catastrophic Nepal-Tibet flash floods?
Initial reports suggested an earthquake may have triggered the disaster, but scientists and seismic tracking agencies confirmed that the disaster was caused by a massive glacial collapse and ice-rock avalanche upstream. The United States Geological Survey (USGS) clarified that seismic signatures recorded during the event were produced by a major glacial collapse and subsequent debris flow near the border.
According to preliminary satellite evaluations detailed by The Guardian and the International Centre for Integrated Mountain Development (ICIMOD), a giant mass of ice and rock broke away from a mountain slope on the Nepali side, falling directly into the Lhende River—a key tributary of the Bhote Koshi. The impact generated a wall of mud and sediment that caused downstream river levels to spike by as much as nine meters (30 feet) within 30 minutes, catching communities completely off guard.
What is the extent of the casualties and missing foreign tourists?
Nepali police confirmed that search crews recovered at least 162 bodies across seven districts stretching from northern Rasuwa down to Chitwan. Across the border in Tibet's Gyirong Port, Chinese state broadcaster CCTV reported three fatalities and over 260 people missing following a massive mudslide that engulfed multi-story buildings and transport vehicles.
Coverage from Nepal News indicates that over 400 tourists were unaccounted for following the surge, including dozens of foreign nationals from India, the United States, Britain, Australia, South Korea, Canada, and several European nations. The flood impacted Syabrubesi and Timure—key gateways for high-altitude trekking routes and religious pilgrimages toward Mount Kailash.
Disaster response teams from the Nepali Army and Chinese emergency units have deployed helicopters, speedboats, and search dogs to navigate deep sludge, though experts at ICIMOD warned that potential river blockages upstream could trigger a secondary wave of flooding if temporary debris dams give way.
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