Location and magnitude of earthquakes. === Original Data Source === USGS Earthquakes 1990-2020 United States Geological Survey earthquake data for earthquakes occuring during 1990-2020. Data is sourced from the ANSS Comprehensive Earthquake Catalog (ComCat). ComCat data are produced by contributing seismic networks. Citation: U.S. Geological Survey (2020). ANSS Comprehensive Earthquake Catalog. Initial access: 2020-08-20. Citation URL: https://earthquake.usgs.gov/earthquakes/search/