Weekly Roundup67 earthquakes
Bay Area Earthquake Roundup: Jan 11 - Jan 17, 2026 (67 Earthquakes, Max M3.0)
67 earthquakes recorded in the Bay Area during the week of Jan 11 - Jan 17, 2026. Largest was M3.0. Complete summary and analysis.
Updated Jan 17, 2026, 11:59 PM PTCupertino, Berkeley, Pacifica +7 more
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Cupertino
M3.0
67
Total Earthquakes
M3.0
Largest Magnitude
10
Cities Affected
Jan 17, 2026
Updated
Weekly Summary
The San Francisco Bay Area recorded 67 earthquakes during the week of Jan 11 - Jan 17, 2026.
Key Statistics
| Metric | Value |
|---|---|
| Total Earthquakes | 67 |
| Largest Magnitude | M3.0 |
| Average Magnitude | M1.28 |
| Most Active Region | SF Peninsula (24 earthquakes) |
Notable Earthquakes
- M3.0 - 23 km ENE of Alum Rock, CA
Thursday, January 15, 2026 at 2:54 PM
View Details- M3.0 - 3 km ESE of San Ramon, CA
Sunday, January 11, 2026 at 4:10 AM
View Details- M2.7 - 4 km ESE of San Ramon, CA
Sunday, January 11, 2026 at 4:21 AM
View Details- M2.5 - 7 km SW of Antioch, CA
Sunday, January 11, 2026 at 9:44 PM
View Details- M2.5 - 3 km SE of Pacifica, CA
Wednesday, January 14, 2026 at 2:00 AM
View DetailsActivity by Region
- SF Peninsula: 24 earthquakes
- Bay Area: 15 earthquakes
- San Ramon: 11 earthquakes
Swarm Activity
4 earthquake swarms were detected this week:
- SF Peninsula: 10 earthquakes (Peak: M1.6)
- Bay Area: 8 earthquakes (Peak: M1.7)
- SF Peninsula: 13 earthquakes (Peak: M2.5)
- San Ramon: 9 earthquakes (Peak: M3.0)
What This Means
This was an active week for the Bay Area. While most earthquakes were too small to feel, the elevated activity is a reminder that we live in one of the most seismically active regions in the United States.
Stay Prepared
- Keep your earthquake emergency kit stocked and accessible
- Know what to do: Drop, Cover, and Hold On
- Report earthquakes you feel: Did You Feel It?
Topics covered
#weeklyroundup#bayarea#seismicactivity#cupertino#berkeley#pacifica#losaltoshills#napa
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Data source:USGS Earthquake Hazards Program