World News
Deadly flood and landslide along Nepal-Tibet border kill at least 160
Researchers assess the environmental mechanisms behind the disaster as officials evaluate triggers and warn of potential secondary flooding.
The short version
- At least 160 people have died and hundreds remain missing following sudden floods and mudflows along the Nepal-Tibet border.
- Experts believe a rock-ice avalanche or landslide blocked the Lhende River before a sudden breach released a destructive torrent.
- Officials and scientific bodies differ on whether an earthquake caused the landslide or if the landslide itself produced the recorded seismic signals.
- Scientists are monitoring upstream river blockages that pose the risk of a secondary flood.
Key facts
- Deadly floods and mudflows struck the Nepal-Tibet border region on Wednesday, killing at least 160 people and leaving hundreds missing.[France 24]
- The International Centre for Integrated Mountain Development (ICIMOD) preliminarily determined that a rock-ice avalanche in Nepal blocked the Lhende River, triggering a cascading flash flood.[France 24]
- Nepal's Foreign Minister Shishir Khanal stated that an earthquake likely triggered the initial landslide.[France 24]
- The US Geological Survey reported that seismic analysis indicates recorded tremors were generated by the mass movement of the landslide itself rather than an independent magnitude 4.4 earthquake.[France 24]
- Specialists noted the absence of heavy rainfall before the event, rendering conventional rainfall-based flood early warning systems ineffective.[France 24]
What remains uncertain
- The initial trigger of the landslide remains disputed between local government statements suggesting an earthquake and USGS analysis attributing seismic waves to the landslide itself.[France 24]
- The possibility of a secondary flood remains unresolved due to an ongoing blockage upstream.[France 24]
- The extent to which climate change influenced this specific event has not yet been confirmed by attribution studies.[France 24]