M4.6 earthquake — 79 km E of Onagawa Chō, Japan
An magnitude 4.6 earthquake occurred 79 km E of Onagawa Chō, Japan on Aug 4, 2026 at 14:00 UTC. The epicenter was at a depth of 40 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 | 40.4 km |
| Coordinates | 38.313, 142.343 |
| Time | Aug 4, 14:00 UTC |
| Location | 79 km E of Onagawa Chō, Japan |
| USGS event ID | us6000ti0a |
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 |
|---|---|---|---|
| M4.1 | 129 km | Jul 31, 22:01 UTC | 117 km ESE of Yamada, Japan |
| M4.5 | 178 km | Aug 3, 15:54 UTC | 123 km E of Miyako, Japan |
| M4.3 | 213 km | Jul 30, 16:20 UTC | 48 km ENE of Noda, Japan |
| M4.8 | 222 km | Aug 2, 00:45 UTC | 64 km ENE of Noda, Japan |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.