Hazards

By Earthquake Hazards Program

Revised 50-State National Seismic Hazard Model

Updates are complete for the 2023 NSHM

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Guam, Mariana Islands, and American Samoa

National Seismic Hazard Model Updates and Progress

Project Updates

The Puerto Rico and U.S. Virgin Islands National Seismic Hazard Model

The 2025 Model Release

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Earthquake hazards are the potentially damaging effects of ground shaking caused by earthquakes. USGS scientists study these hazards and provide a wide range of products to help keep people and communities safe.

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National Seismic Hazard Models & Products

Hazard map from the 2023 50-state update of the National Seismic Hazard Model Project

Access the latest seismic hazard models, maps, tools, and related products.

Updates!

Learn About Earthquake Hazard and Risk

A cross section through the area of Anchorage, AK showing earthquakes at depths along with subduction model linework from Slab2 and inputs from the 2007 NSHM.

What are the USGS National Seismic Hazard Maps and how are they used? What do I need to know about earthquake hazards? What does "earthquake hazard" mean?

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Earthquake Hazard Toolbox

USGS NSHM Toolbox Example: Disaggregation from Hawaii

Web applications for querying and computing hazard from USGS national seismic hazard models.

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