U.S. Seismic Hazard Maps

United States - Lower 48



Puerto Rico and the U.S. Virgin Islands

Guam and Marianas

Samoa and Pacific Islands

Hazard Tools

Unified Hazard Tool - BETA

Will eventually replace most of the individual tools listed below.

Custom Hazard Maps
Replot local portions of the national hazard maps. 1996, 2002, 2008.

Custom EQ Probability Maps
Map of probability of earthquake larger than given magnitude within selected distance. 2009.

Hazard Curves
View hazard curves and dynamically generate uniform hazard response spectra (UHRS). 2008.


For a given location, what are the relative contribution for different magnitude-distance combinations?

Other Products