Our Earthquake Score takes into account all earthquakes near and far, large and small, plus very approximate information about your home’s seismic resilience. It is provided everywhere on Earth. A score of 100 means that over a 30-year period, you are most likely to lose 20% of the value of your home or building to seismic damage. In the U.S., we estimate your home or building’s most likely financial losses and repair time, and the chance of injury, in the largest likely earthquake that could affect you. This calculation finds the USGS scenario earthquake that produces the strongest shaking at your location, and then accesses data to estimate your home or building’s fragility.