M2.5 earthquake — 23 km W of Petrolia, CA
An magnitude 2.5 earthquake occurred 23 km W of Petrolia, CA on Sep 1, 2026 at 01:07 UTC. The epicenter was at a depth of 20 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 | 20.5 km |
| Coordinates | 40.288, -124.548 |
| Time | Sep 1, 01:07 UTC |
| Location | 23 km W of Petrolia, CA |
| USGS event ID | nc75428002 |
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 |
|---|---|---|---|
| M2.7 | 34 km | Aug 28, 21:18 UTC | 56 km W of Petrolia, CA |
| M2.6 | 44 km | Aug 28, 21:24 UTC | 66 km W of Petrolia, CA |
| M2.9 | 56 km | Aug 29, 17:12 UTC | 77 km W of Petrolia, CA |
| M4.7 | 64 km | Aug 29, 02:41 UTC | 85 km W of Petrolia, CA |
| M2.6 | 123 km | Aug 25, 23:02 UTC | 143 km W of Ferndale, California |
| M2.7 | 157 km | Aug 28, 12:15 UTC | 6 km NNW of Redwood Valley, CA |
Earthquake activity in this area
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Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.