The U.S. Geological Survey reported an earthquake with a preliminary magnitude of 3.0 struck this morning in Sonoma County.
Keep an eye on earthquake activity in the Bay Area and California with our digital seismograph.
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The U.S. Geological Survey, in cooperation with the California Geological Survey, provides maps of the San Francisco Bay Area designed to give a look at the geologic history and hazards of the region.
MoreYou can get a handbook reviews earthquake hazards in the Bay region, outlines the likely impact of future earthquakes, and details practical steps for earthquake preparedness, survival, and post-earthquake recovery.