M4.6 earthquake — 129 km ESE of Iwaki, Japan
An magnitude 4.6 earthquake occurred 129 km ESE of Iwaki, Japan on Oct 8, 2026 at 04:41 UTC. The epicenter was at a depth of 39 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 | M4.6 |
|---|---|
| Depth | 39.0 km |
| Coordinates | 36.675, 142.253 |
| Time | Oct 8, 04:41 UTC |
| Location | 129 km ESE of Iwaki, Japan |
| USGS event ID | us6000u0w9 |
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 |
|---|---|---|---|
| M4.8 | 97 km | Oct 27, 00:25 UTC | 54 km E of Tomioka, Japan |
| M4.5 | 136 km | Oct 25, 06:04 UTC | 74 km SSE of Onagawa Chō, Japan |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.