Earthquake Hazards Program
The USGS Earthquake Hazards Program is part of the National Earthquake Hazards Reduction Program (NEHRP), established by Congress in 1977. We monitor and report earthquakes, assess earthquake impacts and hazards, and research the causes and effects of earthquake.
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Significant Earthquakes Past 30 DaysSignificant Earthquake Archive
Yesterday at 3:20 AM local time, the northern San Francisco Bay Area was struck by the largest earthquake to impact the Bay Area since the 1989 M6.9 Loma Prieta earthquake. Yesterday’s earthquake appears to have ruptured on or just west of mapped traces of the West Napa Fault.View News
Despite the magnitude 8.2 earthquake that hit northern Chile in April 2014, the plate boundary in that region is still capable of hosting shocks of the same size or even greater in the near future, according to new research presented in Nature.View Research
Nearly forgotten research from decades ago complicates the task of quantifying earthquake hazards in the Pacific Northwest, according to a new report from scientists at the U.S. Geological Survey, the University of Washington, and other universities.View Research
The 2014 USGS National Seismic Hazard Maps display earthquake ground motions for various probability levels and are applied in seismic provisions of the building codes, insurance rate structures, risk assessments, and other public policy. The updated maps represent best available science and incorporate new findings on earthquake ground shaking, faults, seismicity, and geodesy.USGS News Release View Site
The rate of earthquakes in Oklahoma has increased remarkably since October 2013 – by about 50 percent – significantly increasing the chance for a damaging magnitude 5.5 or greater quake in central Oklahoma.View News