2.1 mi SE of Castro Valley (Alameda County)
3km N of San Lorenzo, CA
Tuesday, June 29, 2021 at 1:29:48 AM
over 4 years ago
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Epicenter Location
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After feeling that M3.9 earthquake, are you ready?
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Community Reports
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Extended discussion with the community
What This Means
A magnitude 3.9 earthquake is often felt by people indoors, especially on upper floors. It may feel like a truck passing by.
This was a shallow earthquake (5.7 mi deep), which can feel stronger at the surface than deeper earthquakes of the same magnitude.
Want to see more earthquakes?
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