When a Mountain Falls: How Ice and Rock Triggered Nepal's Catastrophic Flood
The Nepal Environment Society said satellite analysis found a 5,200-meter ice-rock collapse sent the flood downstream and ruled out a glacial-lake outburst flood.
- A Nepal Environment Society study released on Sunday concluded an ice-rock collapse, not a GLOF, triggered the August 26 disaster in the Langtang Lirung area of Rasuwa.
- Bishal Nath Upreti, president of the Nepal Centre for Disaster Management, said initial theories of a GLOF or earthquake were discarded after the US Geological Survey clarified that falling ice and rock generated the earthquake.
- According to the study, the ice-rock mass fell from about 5,200 metres at an estimated average speed of 167 kmph, while satellite images revealed major geographical changes across about 10 square kilometres.
- The National Disaster Risk Reduction and Management Authority reported Monday the death toll crossed 900, with over 4,000 people missing, while 13 hydropower projects lost around 431 MW of generation capacity.
- Scientists are still trying to establish the precise mechanism, as no one has reached the site; one emerging hypothesis suggests a massive rockslide with ice riding over the falling rock, though researchers caution the theory cannot yet be confirmed.
15 Articles
15 Articles
Nepal floods triggered by massive ice-rock fall, not earthquake or GLOF: experts
The devastating floods that swept through Nepal were triggered by a massive fall of ice and rock in the high Himalayas and not by an earthquake or glacial lake outburst flood (GLOF), according to experts. The flash floods that triggered near the Nepal-Tibet border on August 26 swept through the Bhotekoshi River corridor, destroying homes, roads and bridges and damaging hydropower projects. The death toll from the disaster crossed 900 on Monday, …
Nepal Floods Caused by Bedrock Collapse, Not Melting Glacier, Satellite Images Show
The Nepal flash floods were caused by collapsing bedrock, not a melting glacier, scientists who have studied the satellite images have said. The post Nepal Floods Caused by Bedrock Collapse, Not Melting Glacier, Satellite Images Show appeared first on The Daily Sceptic.
Two disasters, one Himalayan warning: Sikkim’s GLOF lessons for Nepal
Gangtok: The Himalayan disaster unfolding across Nepal is confronting the region with a stark reality: when ice, rock and water move together at high altitude, the warning window can shrink to minutes. On August 26, a large section of glacier broke away near the Nepal-China border, triggering an ice-and-rock avalanche that temporarily blocked the Lhende […] The post Two disasters, one Himalayan warning: Sikkim’s GLOF lessons for Nepal appeared f…
🇳🇵 A France 24 team visited the town of Sinchaur, in the Nepalese district of Nuwako, where hundreds of families were affected by the flash flood and subsequent avalanche on August 26.
When a mountain falls: How ice and rock triggered Nepal's catastrophic flood
The catastrophic flood that killed hundreds of people in Nepal on Aug. 26, 2026, and left many more missing likely began with falling ice and rock crashing into the river below, but that wasn't the end of the disaster. Days later, a new lake pooled behind the debris and then burst, sending more water streaming through the valley.
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