Abstract
The fundamental idea behind impact-based forecasts and warnings (IBFW) is to enable warning services to meaningfully communicate the potential impacts of the hazard interacting with society or the environment by incorporating knowledge about the underlying dynamic exposure and vulnerability of people and assets. The process for doing this can be unclear and depends on the intended purpose and users of the IBFW system. This presentation will provide an overview of why IBFWs may be useful (and for whom), the benefits and challenges of IBFWs, and key requirements for developing and implementing an IBFW system.