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Sikkim Flood Disaster Highlights Growing Climate Risks in the Himalayas
An international research team has concluded that the devastating flood disaster in Sikkim, India, in October 2023 was caused by the collapse of 14.7 million cubic meters of frozen moraine material into South Lhonak Lake, triggering a tsunami-like flood wave that reached up to 20 meters in height. This tragic event, which claimed at least 55 lives and caused widespread damage along the Teesta River, serves as a stark reminder of the escalating dangers posed by climate change in high mountain regions.
A Massive Tsunami-like Wave
On October 3, 2023, the collapse of frozen moraine material into the lake unleashed a catastrophic glacial lake outburst flood (GLOF), releasing about 50 million cubic meters of water—equivalent to the volume of 20,000 Olympic-sized swimming pools. The flood c...