Antioch, California – A cluster of small but noticeable earthquakes rattled parts of California along the Interstate 5 corridor late Sunday into early Monday, with shaking reported from the eastern Bay Area through the Central Valley.
According to the U.S. Geological Survey and the California Integrated Seismic Network, at least three earthquakes were recorded during the overnight period. The largest was a magnitude 3.1 quake located about 15 kilometers north-northwest of Grapevine shortly before midnight Sunday, occurring at a depth of roughly 15 kilometers. Several residents reported light shaking but no damage.
Earlier in the night, a magnitude 2.6 earthquake struck about 3 kilometers south-southwest of Antioch in the eastern Bay Area, followed hours later by a magnitude 2.5 event northwest of Pinnacles National Park in central California. Both quakes were shallow enough to be felt locally, though reports indicate minimal impact.
Seismologists note that while these earthquakes were relatively minor, their alignment along and near the I-5 corridor highlights ongoing tectonic movement tied to California’s complex fault systems, including activity related to the broader San Andreas network.
No injuries or structural damage have been reported. Officials emphasize that small earthquakes can serve as reminders to review emergency plans, secure heavy objects, and ensure earthquake kits are accessible.
Aftershocks are not expected, but additional small earthquakes are possible at any time. Residents are encouraged to report shaking through the USGS “Did You Feel It?” system to help scientists better understand how earthquakes are experienced across the state.
