November 2025 Seismic Activity Report: 366 Earthquakes (Max M4.0)
Complete analysis of Bay Area earthquake activity in November 2025. 366 total earthquakes recorded, 10 felt events. Trends, regional breakdown, and safety reminders.
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November 2025 Overview
The San Francisco Bay Area recorded 366 earthquakes in November 2025, with magnitudes ranging from M0.4 to M4.0.
Monthly Statistics
| Metric | Value |
|---|---|
| Total Earthquakes | 366 |
| Largest Earthquake | M4.0 |
| Average Magnitude | M1.30 |
| Felt Earthquakes (M3+) | 10 |
| Earthquake Swarms | 16 |
Magnitude Distribution
| Range | Count | Percentage |
|---|---|---|
| M0-2 (Micro) | 324 | 89% |
| M2-3 (Minor) | 32 | 9% |
| M3-4 (Light) | 9 | 2% |
| M4+ (Moderate+) | 1 | 0% |
Regional Breakdown
| Region | Earthquakes | Share |
|---|---|---|
| San Ramon | 180 | 49% |
| Gilroy | 57 | 16% |
| Santa Clara | 54 | 15% |
| SF Peninsula | 53 | 14% |
| Berkeley | 16 | 4% |
Weekly Trend
- Week of Nov 1: 22 earthquakes
- Week of Nov 8: 131 earthquakes
- Week of Nov 15: 69 earthquakes
- Week of Nov 22: 77 earthquakes
- Week of Nov 29: 30 earthquakes
Felt Earthquakes
These earthquakes were large enough to potentially be felt by residents:
M4.0 - 5 km S of San Juan Bautista, CA
- Date: Thursday, November 27, 2025
- Time: 8:57 PM UTC
- Depth: 8.2 km
- View Details →
M4.0 - 8 km E of Gilroy, CA
- Date: Wednesday, November 26, 2025
- Time: 2:16 PM UTC
- Depth: 2.9 km
- View Details →
M3.8 - 3 km SE of San Ramon, CA
- Date: Sunday, November 9, 2025
- Time: 5:38 PM UTC
- Depth: 9.2 km
- View Details →
M3.7 - 6 km S of San Juan Bautista, CA
- Date: Thursday, November 27, 2025
- Time: 8:48 PM UTC
- Depth: 8.0 km
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M3.6 - 9 km E of Gilroy, CA
- Date: Wednesday, November 26, 2025
- Time: 2:20 PM UTC
- Depth: 3.9 km
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M3.3 - 4 km SE of San Ramon, CA
- Date: Tuesday, November 18, 2025
- Time: 6:47 AM UTC
- Depth: 9.3 km
- View Details →
M3.2 - 5 km W of San Juan Bautista, CA
- Date: Friday, November 28, 2025
- Time: 3:40 PM UTC
- Depth: 6.6 km
- View Details →
M3.2 - 4 km SE of San Ramon, CA
- Date: Thursday, November 20, 2025
- Time: 3:27 PM UTC
- Depth: 10.2 km
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M3.0 - 3 km SSW of Colma, CA
- Date: Saturday, November 29, 2025
- Time: 1:03 AM UTC
- Depth: 4.5 km
- View Details →
M3.0 - 4 km SE of San Ramon, CA
- Date: Sunday, November 9, 2025
- Time: 5:39 PM UTC
- Depth: 8.5 km
- View Details →
Swarm Activity
16 earthquake swarms were detected in November 2025:
- Santa Clara Swarm
- Duration: Nov 29, 2025 - Nov 29, 2025
- Total earthquakes: 6
- Peak magnitude: M1.8
- San Ramon Swarm
- Duration: Nov 28, 2025 - Nov 30, 2025
- Total earthquakes: 7
- Peak magnitude: M1.7
- Gilroy Swarm
- Duration: Nov 27, 2025 - Nov 30, 2025
- Total earthquakes: 16
- Peak magnitude: M4.0
- SF Peninsula Swarm
- Duration: Nov 27, 2025 - Nov 29, 2025
- Total earthquakes: 8
- Peak magnitude: M3.0
- Gilroy Swarm
- Duration: Nov 26, 2025 - Nov 28, 2025
- Total earthquakes: 13
- Peak magnitude: M4.0
Looking Ahead
The Bay Area sits atop several major fault systems including the San Andreas, Hayward, and Calaveras faults. Scientists estimate a 72% probability of a magnitude 6.7 or greater earthquake in the region within the next 30 years.
Stay Prepared
1. Before: Create an earthquake kit and family communication plan
2. During: Drop, Cover, and Hold On
3. After: Check for injuries, assess damage, and be prepared for aftershocks
Report felt earthquakesTopics covered
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