The Post Event Review Capability (PERC) methodology developed by Zurich Insurance Company Ltd., in collaboration with the Institute for Social and Environmental Transition-International (ISET-International or ISET) in 2013, provides a structured method for examining why a hazard becomes a disaster. PERC has been utilized to examine more than 20 cyclones, floods, and wildfires in different contexts around the world.

This report has been developed by ISET-International, a member of the Zurich Climate Resilience Alliance. The study focuses on a highly unusual 40-day period in October and November 2020 when Central Vietnam was impacted by heavy monsoon rainfall and a series of nine tropical depressions and storms. The associated flooding — a series of events with little time to regroup and prepare between them — taxed the country’s Disaster Risk Management (DRM) system and highlighted resilience gaps in new and different ways. This report, based on discussions with households, community officials, and city and provincial government, and complemented by secondary source materials relating to this series of events and other historic events in the region, provides insights into four key resilience challenges illuminated by the flooding and practical recommendations for addressing those challenges.