2.5 mi NW of Hercules (Contra Costa County)
4km SE of Hercules, CA
Thursday, October 28, 2021 at 6:31:51 AM
over 4 years ago
Did you feel this earthquake?
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Epicenter Location
Be Prepared for Next Time
After feeling that M0.9 earthquake, are you ready?
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Community Reports
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Extended discussion with the community
What This Means
A magnitude 0.9 earthquake is typically not felt and is only detected by sensitive instruments. Thousands of these occur daily worldwide.
This was a shallow earthquake (5.4 mi deep), which can feel stronger at the surface than deeper earthquakes of the same magnitude.
Want to see more earthquakes?
Explore the live earthquake map and track all recent seismic activity in the Bay Area.