Stronger Earthquakes Predicted for Bay Area—and They Could Come Soon

A new study improves tremor forecasting of major northern California faults.

California's Bay Area could face bigger earthquakes—in the near future—than previously predicted, scientists warn in a new study based on the most comprehensive monitoring and analysis to date.

In particular, four faults in urban areas around San Francisco have now built up enough energy to cause a significant temblor at any time.

Most notably, the Green Valley Fault in the North Bay's Solano County "is likely to have a larger earthquake than people previously thought," says James J. Lienkaemper of the U.S. Geological Survey in Menlo Park, California.

Lienkaemper led a new analysis of the northern part of California's San Andreas Fault system that was published Monday in the Bulletin of the Seismological Society of America.

Using the most rigorous measurements made

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