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Ozette Lake, on Washington State’s Olympic Peninsula, is the largest unaltered lake in the state. Glacially carved to depths of about 100 meters (328...

If you live in California, you've almost certainly felt an earthquake - maybe more than one. Maybe, as the residents of the Bay Area city of San Ramon...

Understanding the earthquake history of a region is key to estimating seismic hazard.  To help with this task, Geologists look for clues about...

USGS is currently soliciting project proposals for Fiscal Year 2026 grants on earthquake hazards science. The grants are a long-standing effort that...

Set a reminder for 10:17 a.m. on Oct. 17 and join FEMA, USGS, and millions of others for the world’s largest preparedness drill.

‘Did you feel it’ reporting available in multiple languages 

On October 17, 1989, at 5:04 PM, a 6.9 magnitude earthquake hit near Loma Prieta, CA., shaking the San Francisco and Monterey Bay regions. The...

New USGS research documents a 14,000-year history of seismic activity preserved in the sediments of Ozette Lake, a ~100-meter (328-foot) deep coastal...

Ocean-bottom seismographs are valuable tools for studying marine geohazards like subduction zone earthquakes. The USGS has partnered with the Woods...

On July 4th, 2019, as millions of Southern Californians looked forward to fireworks and other celebrations, earthquake shaking rumbled across much of...