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Bay Area Rocked by Series of Earthquakes Saturday Night

12/21/2025

49 6 Full Breakdown

Summary

Story summary

The Bay Area near San Ramon experienced a Saturday-evening sequence of earthquakes, starting with a 3.9 magnitude event at 6:32 p.m. that was upgraded to 4.0.
A second quake of magnitude 2.8 struck at 6:36 p.m., followed by a 3.0 quake at 6:53 p.m.
Shaking was felt in Oakland and San Francisco; the event follows a cluster earlier in the week, including a 4.0 magnitude quake on Friday night.

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Story summary

The Bay Area near San Ramon experienced a Saturday-evening sequence of earthquakes, starting with a 3.9 magnitude event at 6:32 p.m. that was upgraded to 4.0.
A second quake of magnitude 2.8 struck at 6:36 p.m., followed by a 3.0 quake at 6:53 p.m.
Shaking was felt in Oakland and San Francisco; the event follows a cluster earlier in the week, including a 4.0 magnitude quake on Friday night.