NSHMP Workshops
Please read the disclaimer at the bottom of the page about the content of presentations linked from here.
If you do not already receive emails about our workshops and would like to, please subscribe here!
Upcoming Workshops
- tbd
Past Workshops
Workshops for the 2025 Puerto Rico and US VI Update of the NSHMs
- 2025 PRVI NSHM Update & Beyond Workshop – August 28–29, 2024 (contact: Allison Shumway)
- NSHM2025 PRVI Earthquake Geology Updates Workshop – May 17, 2023 (contact: Jessie Thompson Jobe)
- Optimizing Seismic Hazard Assessments for Improved Policy Decision Making, Compliance and Individual Safety Actions in Puerto Rico and the U.S. Virgin Islands: SSA Workshop – April 17, 2023 (contact: Allison Shumway)
Workshops for the 2023 50-State Update of the NSHMs
- USGS National Seismic Hazard Model User Needs Workshop – September 17–18, 2024 (contact: Ben Mason)
- USGS and EERI Workshop on the 2023 Alaska NSHM – June 26, 2024 (contact: Peter Powers)
- USGS National Seismic Hazards Model Workshop – Apr. 9, 2024 (contact: Ben Mason)
- 2023 CEUS/Coastal Plains Earthquake Ground Motion Virtual Workshop – Dec. 7–8, 2023 (contact: Oliver Boyd)
- 2023 50-State NSHM Update Workshop – May 3-4, 2023, Newark, CA (contact: Julie Herrick)
- 2023 Alaska National Seismic Hazard Model Update Workshop – Dec. 6, 2022 (contact: Peter Powers)
- Western U.S. Ground Motions Workshop – Sept. 16, 2022 (contact: Julie Herrick)
- NGA-Subduction NSHM Implementation Workshop II – July 20, 2022 (contact: Sean Ahdi)
- Central and Eastern U.S. Workshop – May 18, 2022 (contact: Allison Shumway)
- Seismic Directivity Workshop – Oct. 28-29, 2021 (contact: Kyle Withers)
- NGA-Subduction workshop – July 9, 2021
- Western U.S. Deformation Modeling Workshop – July 8, 2021 (contact: Fred Pollitz)
- NSHM User-Needs Workshop – June 28–30, 2021
- CEUS Earthquake Geology Workshop – June 22, 2021 (contact: Jessie Thompson Jobe)
- 2023 Update to the Alaska NSHM – May 25, 2021 (Alaska NSHM Update contact: Peter Powers; Alaska Workshop contact: Allison Shumway)
- Recurrence Models for Earthquakes on the Cascadia Subduction Zone – Feb. 23, 2021
- 2023 50-State Update of the NSHMs Kickoff Meeting – Jan. 22, 2021
- Pacific Northwest Seismic Hazard Map Fault Model Workshop – Nov. 17, 2020 (contact: Alex Hatem)
- California Seismic Hazard Map Fault Model Workshop – Nov. 12, 2020 (contact: Alex Hatem)
- Intermountain West Seismic Hazard Map Fault Model Workshop – Nov. 10, 2020 (contact: Alex Hatem)
- Coastal Plain Amplification Workshop – Oct. 5 and 7, 2020 (contact: Oliver Boyd)
Workshops for 2023 Earthquake Rupture Forecasting (contact Ned Field or Julie Herrick)
- Nov 30, 2022: Introductory Overview of Model, Status, Process, & Web-based Resources
- Dec 7, 2022: Fault & Deformation Models & Paleoseismic Recurrence Intervals (CA and Wastach)
- Dec 15, 2022: Gridded Seismicity Models & Scaling Relationships
- Jan 6, 2023: Inversion Fault System Solutions
- Jan 13, 2023: CEUS Fault-based Sources (including NM)
- Jan 20, 2023: Cascadia Subduction Model
- Jan 23, 2023: Overview of Final Draft Model
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 are 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 purposes 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 available after formal review, approval, and release as a publication.