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The National Risk Index Annualized Frequency Tornado feature layer includes annualized frequency data for Tornadoes at the county and Census tract level. The data are a subset of the National Risk Index, a dataset and online tool that helps to illustrate the communities most at risk for 18 natural hazards across the United States and territories.
Data Provided By:
FEMA, Compass, CDM Smith, ABS Consulting, Factor, Inc., Arizona State University (for Spatial Hazard Events and Losses Database for the United States), the Centers for Disease Control Agency for Toxic Substances and Disease Registry (for the Social Vulnerability Index), the University of South Carolina's Hazards and Vulnerability Research Institute (for Baseline Resilience Indicators for Communities), and all the other data providers and subject matter experts that have helped guide the National Risk Index over the years.
Layers in this dataset are based on combinations of the following options.
You may choose from these options to select a specific layer on the map page.