M4.6 earthquake — 161 km SSE of Koshima, Japan
An magnitude 4.6 earthquake occurred 161 km SSE of Koshima, Japan on Jun 30, 2026 at 12:39 UTC. The epicenter was at a depth of 10 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 | 10.0 km |
| Coordinates | 28.947, 131.316 |
| Time | Jun 30, 12:39 UTC |
| Location | 161 km SSE of Koshima, Japan |
| USGS event ID | us6000t96r |
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 |
|---|---|---|---|
| M5.1 | 162 km | Jul 23, 09:22 UTC | 85 km SE of Tatsugō, Japan |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.