Rescue teams in Nepal have largely wound down their search for survivors of the Aug. 26 flash floods that swept the Nepal-Tibet border region, two weeks after a wall of ice, rock and mud tore down the Trishuli River valley. The confirmed death toll has passed 1,000, and officials say roughly 4,000 people remain unaccounted for, most of them in Nepal.
The disaster began when a mass of ice and debris collapsed from Lirung Peak high in the Himalayas. The avalanche released a torrent of water and mud that wiped out villages, tore bridges from their anchors, and flooded tunnels at several hydroelectric projects where hundreds of workers were believed to be trapped.
A slow count of the missing
Nepal's disaster management authority says more than 21,000 police, army and armed police personnel joined the search. Early on, overwhelmed morgues forced authorities to begin burying unidentified victims. Officials now say the focus is moving from rescue to rehabilitation, with temporary shelter, clean water and health care needed across the worst-hit districts of Rasuwa and Nuwakot.
The toll has climbed slowly because many villages sit in steep valleys that stayed cut off for days after landslides blocked roads and trails. Officials warn that fresh rain could trigger more slides before the count is finished.
A flood that defied prediction
Scientists say the event was close to impossible to forecast. Basanta Raj Adhikari, director of the Centre for Disaster Studies at Tribhuvan University, calculated that the energy released by the collapsing ice and debris was greater than that of the atomic bomb dropped on Hiroshima. Researchers say the failure shows how little is known about unstable glacial valleys.
A review of Nepal's official alert system found that SMS warnings arrived late, were sent only in Nepali, and lacked location-specific guidance about when to leave. In several villages, informal community warning networks saved lives while the state system did not.
A climate warning for the mountains
Nepal's prime minister has called the floods a result of climate change and pressed the international community to act. Scientists warn that warming is destabilizing high-altitude glaciers across the Himalayas, and that valleys below unstable peaks face growing risk. The disaster is widely described as a preview of the costs other mountain regions may pay as the climate shifts.