Earthquake Hazards

Hazards

Request for Hazard Modeling Contributions

The National Seismic Hazard Model will be updated twice over the next 6 years since the 2014 update. View NSHM Schedule 2016-2021.

View Details

map of US with rainbow contours

Simplified 2014 Map of U.S. Seismic Hazards showing two-percent probability of exceedance in 50 years for peak ground accelerations. Red is the highest hazard and white is the lowest hazard. (Public domain.)

Learn About Earthquake Hazards
What do I need to know about earthquake hazards? What does "earthquake hazard" mean? What are hazard maps?

Faults
Interactive fault map and comprehensive geologically based information on known or suspected active faults and folds in the United States. Also, generalized fault data used in the hazard maps.

Seismic Hazard Maps and Site-Specific Data
U.S. Seismic Hazard Maps, hazard tools, and other products.

Design Ground Motions
Ground motion parameter values for the design of buildings, bridges, and other structures.

Earthquake Scenarios
Earthquake scenarios describe the expected ground motions and effects of specific hypothetical large earthquakes.

Workshops
Workshops are conducted periodically for input into the hazards products.