2009 Earthquake Probability Mapping
Notice: This web-application will no longer be available after March 1, 2017, by which point alternative means of acquiring earthquake probability data will be provided. Please contact us with any questions or comments.
This web site was designed to display earthquake probabilities that are computed from the source model of the 2008 USGS-National Seismic Hazard Mapping Project (NSHMP) update. The region of model validity is the conterminous (lower 48 states) USA and Alaska. Valid locations in the conterminous 48 states range from [24.6, 50.0] degrees latitude and [-125.0, -65.0] degrees longitude. Valid locations in Alaska range from [50.0, 72.0] degrees latitude and [-200.0, -125.0] degrees longitude.
The generated maps will show the probabilities of earthquakes within a radius of 50 km. A text report of the probabilities for a different, selected radius can also be generated.