M2.5 earthquake — 24 km SW of Petrolia, CA
An magnitude 2.5 earthquake occurred 24 km SW of Petrolia, CA on Sep 12, 2026 at 02:42 UTC. The epicenter was at a depth of 0 km — a shallow earthquake. Shallow quakes concentrate their energy near the surface, so they tend to produce stronger shaking close to the epicenter.
Event data
| Magnitude | M2.5 |
|---|---|
| Depth | 0.2 km |
| Coordinates | 40.189, -124.497 |
| Time | Sep 12, 02:42 UTC |
| Location | 24 km SW of Petrolia, CA |
| USGS event ID | nc75434022 |
What this magnitude typically means
Very small earthquakes are usually only detected by instruments and are rarely felt. They are a normal part of background seismic activity. Tremor does not compute a single local shaking figure here, because how strong a quake feels at any address depends on distance, depth and local geology — open the interactive globe to explore the ShakeMap and estimated intensity.
Nearby recent earthquakes
| Magnitude | Distance | Time (UTC) | Location |
|---|---|---|---|
| M3.8 | 11 km | Sep 10, 01:24 UTC | 20 km WSW of Petrolia, CA |
| M3.6 | 12 km | Sep 10, 01:24 UTC | 21 km W of Petrolia, CA |
| M3.7 | 81 km | Sep 7, 21:44 UTC | 36 km E of Hydesville, CA |
| M2.7 | 205 km | Sep 9, 19:12 UTC | 12 km WNW of Cobb, CA |
| M2.6 | 205 km | Sep 9, 17:19 UTC | 11 km WNW of Cobb, CA |
| M3.1 | 206 km | Sep 10, 20:36 UTC | 10 km WNW of Cobb, CA |
Earthquake activity in this area
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Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.