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Sudden Flash Floods Ravage NepalTibet Border

Experts point to a glacier‑derived avalanche possibly tied to a same‑day M4.4 quake which blocked a tributary, triggering a dam‑break flood that poses an urgent threat to rescue operations.

Overview

  • A violent, fast-moving flood struck the Bhote Koshi/Trishuli corridor on Wednesday, causing widespread destruction in Rasuwa district (Timure, Syabrubesi) and at the Gyirong border crossing in Tibet.
  • Rescue teams have recovered roughly 157 bodies in Nepal while official death and missing totals remain provisional and vary between outlets as recovery and identification continue.
  • Investigators and ICIMOD experts say a glacier‑derived avalanche that blocked the Lhende Khola tributary is the leading cause, and Nepal’s government has noted a USGS‑recorded M4.4 quake on the same day as a possible contributing factor.
  • The floods severely damaged roads, bridges and hydro projects, with Nepal’s Ministry of Energy reporting about 430 megawatts of hydropower capacity affected and key border links disrupted.
  • The event echoes a similar August 2025 flood and highlights growing Himalayan risk from melting glaciers and unstable slopes that endanger trekkers, pilgrims and downstream communities and strain Nepal’s energy and rescue capacity.