2014 Preliminary Hazard Maps

This page provides documentation in support of the 2014 update to the National Seismic Hazard Map (NSHM). Note: These preliminary results are being made available for public comment until mid-July 2013, after which the maps and documentation will be finalized, based on further review and consideration of any feedback received.

Please contact the NSHM group with any comments by clicking on the Contact Us link in the footer.

Download an executive summary (2.1MB PDF).

Download a draft version of the report (54MB ZIP).
(Adobe Acrobat Reader required to view PDFs and linked files.)

Summary of changes:

(see report for details; hazard implications documented in ‘Results’ at bottom)