M4.7 earthquake — 100 km W of Petrolia, CA
An magnitude 4.7 earthquake occurred 100 km W of Petrolia, CA on Sep 29, 2026 at 11:36 UTC. The epicenter was at a depth of 2 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 | M4.7 |
|---|---|
| Depth | 2.3 km |
| Coordinates | 40.433, -125.460 |
| Time | Sep 29, 11:36 UTC |
| Location | 100 km W of Petrolia, CA |
| USGS event ID | nc75444322 |
What this magnitude typically means
Light earthquakes are felt by most people nearby but rarely cause damage. Distance, depth, and soil type determine whether a quake feels sharp or barely noticeable. 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 |
|---|---|---|---|
| M2.6 | 55 km | Sep 22, 15:23 UTC | 47 km WNW of Petrolia, CA |
| M2.5 | 61 km | Sep 22, 19:00 UTC | 40 km W of Petrolia, CA |
| M3.2 | 185 km | Sep 28, 13:30 UTC | 275 km W of Indianola, California |
| M2.6 | 224 km | Sep 27, 19:10 UTC | 9 km NW of Redwood Valley, CA |
| M2.7 | 231 km | Sep 26, 04:02 UTC | 10 km W of Boonville, CA |
| M3.7 | 232 km | Sep 26, 03:42 UTC | 10 km W of Boonville, CA |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.