This document summarizes a presentation on catastrophe modelling. It discusses the typical risks modeled like hurricanes, floods and earthquakes. It explains how cat models work by generating stochastic events, assessing hazards, applying vulnerability to calculate damage, and quantifying financial loss. Cat models produce exceedance curves and estimate average annual loss to help set premium rates and layers. Major cat model vendors include independent companies focused on insurance as well as some governmental and academic institutions. Other tools mentioned include global detection systems using satellites, drones and social media.