Please read the disclaimer at the bottom of the page about the content of presentations linked from here.
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Upcoming Workshops
The NSHMP is currently planning a series of public workshops for the spring of 2022 to present 2023 NSHM draft model results. Dates for these workshops will be posted here, once finalized.
Past Workshops
Workshops for the 2023 50-State Update of the NSHMs
- Seismic Directivity Worksop - October 28-29, 2021 (contact: Kyle Withers)
- Coastal Plain Amplification Workshop - October 5 and 7, 2020 (contact: Oliver Boyd)
- Intermountain West Seismic Hazard Map Fault Model Workshop - November 10, 2020 (contact: Alex Hatem)
- California Seismic Hazard Map Fault Model Workshop - November 12, 2020 (contact: Alex Hatem)
- Pacific Northwest Seismic Hazard Map Fault Model Workshop - November 17, 2020 (contact: Alex Hatem)
- 2023 50-State Update of the NSHMs Kickoff Meeting - January 22, 2021
- Recurrence Models for Earthquakes on the Cascadia Subduction Zone - February 23, 2021
- 2023 Update to the Alaska NSHM - May 25, 2021 (Alaska NSHM Update contact: Peter Powers; Alaska Workshop contact: Allison Shumway)
- CEUS Earthquake Geology Workshop - June 22, 2021
- NSHM User-Needs Workshop - June 28–30, 2021
- NGA-Subduction workshop – July 9, 2021
Workshops for the 2021 Hawaii Hazard Maps
Workshops for the 2018 National Hazard Maps
- 2018 NSHM Update Workshop - March 7-8th, 2018
Disclaimer
The U.S. Geological Survey produces National Seismic Hazard Maps that are the basis of seismic provisions of building design codes, earthquake insurance rate structures, and other public policy decision-making tools. Because of the significant safety and financial implications of these maps, they are held to a high level of scrutiny by earthquake engineering and science experts. The National Seismic Hazard Mapping Project, which has responsibility for the maps, has undertaken an extensive process to update these maps. We hold regional and topical open workshops across the country to solicit new information, to discuss potential changes, and to build consensus on the best available science. Workshop participants are welcome to show any information relevant to the topic of seismic hazard in the United States. The workshop presentations inform the community of the current methods, models, and data that are being considered in the update and provide credit to the presenters for their contributions. Moreover, these presentations are important in describing the current state of practice and in providing a historical context of prevalent thoughts of the hazard community at the time the maps were developed. However, all of the information shown at the workshop is pre-decisional, and not all of the information has been published or even reviewed. It is important for individuals accessing the workshop section of this website to understand that the workshop information is not endorsed by the USGS. A similar disclaimer also applies to un-reviewed USGS presentations that typically display impacts of a suite of alternative weighted-models on the seismic hazard maps. These presentations are shown for informational purposed only; the models shown in the presentations will not necessarily be included in the final maps. Final hazard maps will rely on published information, and the documentation will be published as a USGS Open-file report and as journal articles.