A magnitude 2.1 earthquake struck 1 km E of Port Costa, CA at Sep 26, 12:56 AM ET, 7 km deep, micro – recorded by instruments, rarely felt. 65 people reported feeling it.
How strong was the 1 km E of Port Costa, CA earthquake?
Magnitude 2.1 (md), micro – recorded by instruments, rarely felt. Depth 7 km.
Was it felt?
65 people reported feeling it to the USGS "Did You Feel It?" survey; the highest reported intensity was 3.0.
Were there aftershocks?
No earthquakes within 100 km have followed so far in our records.
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Source: U.S. Geological Survey (USGS) earthquake catalog, real-time feeds and FDSN event service; magnitudes and locations are revised by seismologists for hours after an event. Times are Eastern (ET) unless marked UTC. Not an alert service: for warnings follow local authorities and tsunami centers.
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