The HayWired Earthquake Scenario—Societal Consequences

Fact Sheet 2021-3054
By: , and 



The HayWired earthquake scenario, led by the U.S. Geological Survey (USGS), anticipates the impacts of a hypothetical moment magnitude 7.0 earthquake on the Hayward Fault. The fault runs along the east side of California’s San Francisco Bay and is among the most active and dangerous in the United States, passing through a densely urbanized and interconnected region. A scientifically realistic scenario is one way to learn from a large earthquake before one occurs in the bay region. The USGS and its partners in the HayWired Coalition are working to energize residents and businesses to engage in new and ongoing efforts to prepare the region for such a future earthquake.

Suggested Citation

Wein, A.M., Jones, J.L., Johnson, L.A., Kroll, C., Strauss, J., Witkowski, D., Cox, D.A., 2021, The HayWired Earthquake Scenario—Societal Consequences: U.S. Geological Survey Fact Sheet 2021–3054, 6 p.,

ISSN: 2327-6932 (online)

ISSN: 2327-6916 (print)

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title The HayWired Earthquake Scenario—Societal Consequences
Series title Fact Sheet
Series number 2021-3054
DOI 10.3133/fs20213054
Year Published 2021
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Earthquake Science Center, Science Application for Risk Reduction (SAFRR)
Description 6 p.
Country United States
State California
Other Geospatial San Francisco Bay
Online Only (Y/N) N
Google Analytic Metrics Metrics page
Additional publication details