M4.5 earthquake — 103 km S of Koshima, Japan
An magnitude 4.5 earthquake occurred 103 km S of Koshima, Japan on Aug 4, 2026 at 09:29 UTC. The epicenter was at a depth of 35 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 | M4.5 |
|---|---|
| Depth | 35.0 km |
| Coordinates | 29.308, 130.635 |
| Time | Aug 4, 09:29 UTC |
| Location | 103 km S of Koshima, Japan |
| USGS event ID | us6000tj01 |
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 |
|---|---|---|---|
| M4.4 | 233 km | Aug 22, 18:44 UTC | 50 km NW of Amagi, Japan |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.