M2.7 earthquake — 63 km W of Petrolia, CA
An magnitude 2.7 earthquake occurred 63 km W of Petrolia, CA on Oct 31, 2026 at 23:21 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 | M2.7 |
|---|---|
| Depth | -0.2 km |
| Coordinates | 40.347, -125.033 |
| Time | Oct 31, 23:21 UTC |
| Location | 63 km W of Petrolia, CA |
| USGS event ID | nc75460612 |
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 | 3 km | Nov 1, 12:31 UTC | 66 km W of Petrolia, CA |
| M2.9 | 35 km | Oct 30, 13:56 UTC | 29 km W of Petrolia, CA |
| M5.0 | 51 km | Nov 5, 04:56 UTC | 114 km W of Petrolia, CA |
| M2.7 | 255 km | Nov 2, 15:14 UTC | 7 km NW of The Geysers, CA |
| M2.5 | 267 km | Nov 2, 20:34 UTC | 8 km E of Lower Lake, CA |
| M2.8 | 269 km | Nov 2, 21:02 UTC | 8 km E of Lower Lake, CA |
Earthquake activity in this area
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Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.