On August 5, a cloudburst near the Kheer Ganga river triggered a flash flood that tore through Dharali, a village in the Indian Himalayas. Within minutes, the river swelled with water, mud and debris, sweeping away homes, roads and lives.
Every monsoon season, the Himalayas see similar tragedies – flash floods caused by cloudbursts or glacial lake outbursts. The first explanation we often hear is climate change. Extreme rainfall and melting glaciers are part of our warming world, but that is only half the story. The other half lies in where and how we build.
A cloudburst is an extreme, sudden downpour – often more than 100mm of rain in just an hour, falling over a small area. It’s like the sky suddenly emptying a huge bucket of water over the mountainside.
