Weekly RoundupM4.2 Peak121 earthquakes
Bay Area Earthquake Roundup: Feb 1 - Feb 7, 2026 (121 Earthquakes, Max M4.2)
121 earthquakes recorded in the Bay Area during the week of Feb 1 - Feb 7, 2026. Largest was M4.2. Complete summary and analysis.
Updated Feb 7, 2026, 11:59 PM PTSan Ramon, Milpitas, Hayward +7 more
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San Ramon
M4.2
121
Total Earthquakes
M4.2
Largest Magnitude
10
Cities Affected
Feb 7, 2026
Updated
Weekly Summary
The San Francisco Bay Area recorded 121 earthquakes during the week of Feb 1 - Feb 7, 2026.
Key Statistics
| Metric | Value |
|---|---|
| Total Earthquakes | 121 |
| Largest Magnitude | M4.2 |
| Average Magnitude | M2.04 |
| Most Active Region | San Ramon (111 earthquakes) |
Notable Earthquakes
- M4.2 - 4 km SE of San Ramon, CA
Monday, February 2, 2026 at 3:01 PM
View Details- M3.8 - 4 km SSE of San Ramon, CA
Monday, February 2, 2026 at 2:27 PM
View Details- M3.8 - 5 km SSE of San Ramon, CA
Monday, February 2, 2026 at 3:27 PM
View Details- M3.4 - 5 km SE of San Ramon, CA
Tuesday, February 3, 2026 at 4:30 AM
View Details- M3.1 - 4 km ESE of San Ramon, CA
Monday, February 2, 2026 at 10:56 PM
View DetailsActivity by Region
- San Ramon: 111 earthquakes
- Bay Area: 4 earthquakes
- Santa Clara: 3 earthquakes
Swarm Activity
2 earthquake swarms were detected this week:
- San Ramon: 13 earthquakes (Peak: M2.2)
- San Ramon: 97 earthquakes (Peak: M4.2)
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#sanramon#milpitas#hayward#sanjose#pleasanton
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More from Bay Tremor
- February 2026 Seismic Activity Report: 121 Earthquakes (Max M4.2)
- ⚡ Earthquake Swarm Alert: 13 Earthquakes in San Ramon
- 📢 M3.8 Earthquake Near Dublin - Did You Feel It?
- ⚠️ M4.2 Earthquake Hits San Ramon - Felt Across Bay Area
- 📢 M3.8 Earthquake Near San Ramon - Did You Feel It?
Data source:USGS Earthquake Hazards Program