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California Geological Survey

Seismic Shaking Hazards in California

Based on the USGS/CGS Probabilistic Seismic Hazards Assessment (PSHA) Model, 2002 (revised April 2003).
10% probability of being exceeded in 50 years.

To determine ground motions enter coordinates below.
psha12339psha12338psha12236psha12239psha12238psha12237psha12139psha12440psha12340psha12240psha12140psha12138psha12137psha12136psha12039psha12241psha12442psha12441psha12342psha12341psha12242psha12142psha12141psha12042psha12041psha12040psha12135psha11834psha12036psha12035psha12034psha11935psha11934psha12038psha12037psha11938psha11937psha11838psha11837psha11737psha11833psha11936psha11835psha11734psha11836psha11736psha11735psha11733psha11635psha11634psha11633psha11534psha11535psha11533psha11636

To obtain seismic shaking hazard values for a point,
click anywhere on the map above to zoom into a larger scale map
or enter geographic coordinates below:

Longitude: Latitude:
Please enter coordinates as Decimal Degrees
Example:   Longitude -122.0017   Latitude 36.9894

USGS Probabilistic Seismic Hazards Page
CGS Probabilistic Seismic Hazards Page

 

Last edited on April 27, 2005
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© 2005 State of California. Arnold Schwarzenegger, Governor.
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