The 2023 NSHM: What's New and What It Means for You
2023 National Seismic Hazard Model: What's Shaking
The 2023 50-State Update of the US National Seismic Hazard Model (NSHM) has been released, and it provides important new insights into the seismic hazards facing the United States. The NSHM is a probabilistic model that estimates the likelihood and severity of earthquakes in different parts of the country. It is used by engineers, architects, and policymakers to develop building codes and other measures to reduce earthquake risk.
Changes in 2023
The 2023 NSHM includes several important changes from the previous version, released in 2018. These changes include:
- Increased seismic hazard in some areas, particularly in the central and eastern United States.
- Decreased seismic hazard in some areas, particularly in the western United States.
- New data on earthquake faults and ground motion.
- Improved models for estimating earthquake probabilities.
What the Changes Mean for You
The changes in the 2023 NSHM have important implications for earthquake safety in the United States. Areas with increased seismic hazard may need to adopt stricter building codes and other measures to reduce earthquake risk. Areas with decreased seismic hazard may be able to relax some of their earthquake safety requirements.
What You Can Do
There are several things you can do to prepare for an earthquake, regardless of where you live. These include:
- Securing your home by identifying potential hazards and taking steps to mitigate them.
- Developing an earthquake safety plan.
- Practicing earthquake drills.
- Having an emergency kit ready.
By taking these steps, you can help to reduce your risk of injury or damage in the event of an earthquake.
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