Detailed analysis discovers the deadly combination that triggered Nepal's catastrophic 2021 flood

In late September and early October this year, unusually heavy monsoon rains led to deadly flooding and landslides in Nepal's southern Kathmandu region. The disaster comes just over three years after a similar catastrophic event in the country's Melamchi Valley, when devastating floods sent rocks, trees and mudflows sweeping through the valley, displacing thousands and wreaking havoc on local communities.