The main objective of the project is to develop a coastal storm early warning system (EWS) prototype to derive coastal flooding (e.g. overwash, overtopping and inundation) and erosion hazards, and the associated risks, by using process-based models, with the latter considering the hydro-morphodynamic feedback interaction, the beachstructure interaction and the wave-structure interaction. The EWS will be applied to 3 recognised hotspots, belonging to both the west (Caparica) and south (Praia de Faro and Quarteira) coasts of Portugal, and representing almost natural (Praia de Faro), nourished (Quarteira and Caparica) and heavily armoured (Caparica) coastlines.