Key facts
- A massive glacier collapse in Nepal caused a deadly flash flood, killing hundreds and leaving many missing.
- Scientists suggest the event was likely caused by a large chunk of glacier breaking off and damming a river.
- The U.S. Geological Survey reported a magnitude 5.2 glacier collapse.
- Hundreds have lost their homes, and critical infrastructure has been damaged.
- Water levels in rivers rose dramatically in a short period due to the surge.
- Climate scientists note that the Hindu Kush Himalaya region is warming rapidly, increasing the risk of such disasters.
A devastating flash flood in Nepal, which killed hundreds and left many more missing, was likely triggered by a large section of a glacier breaking off and temporarily damming a river, according to preliminary scientific investigations. The U.S. Geological Survey reported a magnitude 5.2 glacier collapse that sent debris downstream with catastrophic impact.
Scientists are still gathering information from satellite and ground data to fully understand the event. Geoscientist Jakob Steiner described the glacial ice fall as potentially feeling like a bomb exploding. The sudden surge in water levels caused widespread destruction, damaging critical infrastructure like hydropower dams, roads, buildings, and bridges, and displacing hundreds of people from their homes.
While scientists caution against drawing a direct link to global warming yet, they emphasize that rising global temperatures are significantly altering the Hindu Kush Himalaya region, which is warming faster than many other parts of the world. This rapid warming is changing glaciers, snow cover, and permafrost, increasing the likelihood of such disasters. The region's glaciers are melting at an accelerating rate, which can lead to the enlargement of glacial lakes and a higher potential for sudden floods. As glaciers retreat, exposed rock and thawing permafrost can destabilize mountain slopes, increasing the risk of material sliding downhill.