Category: Uncategorized

Early Warning Systems (EWS)

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Early Warning Systems (EWS) are proven to be one of the most effective measures for saving lives and minimising losses and harm caused by disasters.


This directory is a collaborative space dedicated to sharing knowledge, tools, and best practices related to EWS. Whether you’re a practitioner, researcher, policymaker, or community leader, you’ll find a wide range of resources here.


We also invite you to contribute: if you have valuable insights, documents, or tools to share, please add them to the directory to help others. Together, we can build more effective early warning systems and resilient communities.

Where we work

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The Alliance works across more than 250 communities in 15 countries, in some of the world’s most climate-vulnerable areas. The work we do in each country varies depending on the nature of the existing levels of climate resilience (as measured using the CRMC process), the nature of the climate hazard(s), local and national policy environments, and the expertise of the Alliance partner.  

While every programme is different and informed by the needs of the communities, knowledge gained from each programme is shared with Alliance partners and others to promote good practice and identify opportunities to scale up successful interventions.

Explore each country page to find out more about Alliance activities and the impact of the programme so far.

Perc

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Post-Event Review Capability

The award-winning Post-Event Review Capability (PERC) is a methodology created to review hazard events that become disasters to understand what happened and identify entry points for building or strengthening resilience. 

PERCs have been conducted across the globe after floods, wildfires and tropical cyclones, and have been applied in both urban and rural settings. Individual study results include practical recommendations for action, while multi-PERC reviews identify common strengths and gaps applicable to virtually any context. 

Initially, Zurich focused on floods because floods affect more people globally than any other natural hazard. Recent years have seen a number of severe floods around the world; cyclones causing severe flooding in Tabasco, Mexico; intense rain causing widespread flooding in Senegal; extreme monsoon seasons in Bangladesh; and heavy rainfall causing devastating flooding across western Europe. Each of these disasters was distinct in the way they manifested, but they provide insights into what worked well and what can be learned to reduce future risk.

Materials from the Bangladesh, Mexico, Senegal and western Europe PERCs are available below.

Use this page to learn about the PERC methodology, read full PERC reports or find specific recommendations.