HailDetected is a web application that utilizes National Oceanic and Atmospheric Administration (NOAA) hail related data to help users better understand and respond to hail events that have occurred and their potential to have caused damage to buildings at particular locations. Estimates of hail probability, fall location, and hail size are based on NEXRAD radar data and standard weather algorithms. The HailDetected application is intended to be useful to end users such as insurance claim agents (e.g. looking for evidence that roof damage could have been caused by hail) and roofing companies (e.g. needing to decide when and where to market their services, and to help clients make insurance claims).