M3.7 earthquake — 20 km E of Castle Rock, Washington
An magnitude 3.7 earthquake occurred 20 km E of Castle Rock, Washington on Sep 5, 2026 at 11:09 UTC. The epicenter was at a depth of 18 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 | M3.7 |
|---|---|
| Depth | 17.6 km |
| Coordinates | 46.247, -122.644 |
| Time | Sep 5, 11:09 UTC |
| Location | 20 km E of Castle Rock, Washington |
| USGS event ID | uw714095342 |
What this magnitude typically means
Minor earthquakes are often felt close to the epicenter but almost never cause damage. Whether you feel one at all depends on how near and how shallow it is. 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 |
|---|---|---|---|
| M2.5 | 215 km | Sep 4, 09:26 UTC | 81 km W of Neskowin, Oregon |
| M2.9 | 276 km | Sep 5, 03:08 UTC | 62 km W of Yachats, Oregon |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.