Should I stay or should I go now? Why risk communication is the critical component in disaster risk reduction.

Risk communication is a critical component in disaster risk reduction, especially in designing and implementing early warning systems. The ability to communicate hazard forecasts and risk information to vulnerable communities and stakeholders successfully is crucial for effective disaster preparedness and response, to reduce impact, and to prevent loss of life. Successful risk communication, however, is challenged constantly. Even the most sophisticated forecasting models and advanced early warning systems can be rendered ineffective if the information is not communicated clearly, on time, and in a way that allows the end-user to consider options and act appropriately. These challenges not only apply to fast onset hazards such as cyclones and tsunamis, but also to slower onset hazards such as the current COVID-19 pandemic. Around the world, governments' responses to the current pandemic provide examples of how complex and difficult successful risk communication is. This paper discusses the importance of risk communication as a critical component of early warning systems and explores the constant challenges that vulnerable communities face, how early warning systems sit within the wider Sendai Framework, and what governments have learned from the COVID-19 pandemic, and discusses how we can communicate more effectively in the future to reduce harm.