Utah Earthquake Probabilities

In the first comprehensive study of its kind in the Intermountain West, the Working Group on Utah Earthquake Probabilities (WGUEP) assessed the likelihood of large earthquakes in the Wasatch Front region. This working group was established by the Utah Geological Survey and URS Corporation, with funding from these organizations and the U.S. Geological Survey, External Grants Support (National Earthquake Hazards Reduction Program). This forecast conveys the probability of one or more earthquakes of a specified magnitude range in the region in the next 50 years.

There is a 57% probability that the Wasatch Front region will experience at least one Magnitude (M) 6.0 or greater earthquake and a 43% probability of at least one M6.75 or greater earthquake in the next 50 years.

These probability calculations are a reminder that the Wasatch Front region is seismically active and that large earthquakes can occur at any time. As a result, individuals can take measures to be prepared and reduce their earthquake risk, and communities can advocate for resilient earthquake design and disaster planning.

Full Technical Report and Appendices
U.S. Geological Survey Fact Sheet

Additional Information
WGUEP Web Page

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