M4.0 earthquake — 263 km ESE of Attu Station, Alaska
An magnitude 4.0 earthquake occurred 263 km ESE of Attu Station, Alaska on Aug 23, 2026 at 07:51 UTC. The epicenter was at a depth of 34 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 | M4.0 |
|---|---|
| Depth | 34.2 km |
| Coordinates | 51.693, 176.561 |
| Time | Aug 23, 07:51 UTC |
| Location | 263 km ESE of Attu Station, Alaska |
| USGS event ID | us6000tn08 |
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 |
|---|---|---|---|
| M3.0 | 26 km | Aug 22, 03:52 UTC | 238 km ESE of Attu Station, Alaska |
| M3.0 | 26 km | Aug 22, 18:42 UTC | 240 km ESE of Attu Station, Alaska |
| M3.5 | 30 km | Aug 25, 16:18 UTC | 234 km ESE of Attu Station, Alaska |
| M3.5 | 30 km | Aug 23, 14:46 UTC | 236 km ESE of Attu Station, Alaska |
| M2.8 | 32 km | Aug 26, 00:38 UTC | 236 km ESE of Attu Station, Alaska |
| M3.3 | 33 km | Aug 26, 12:53 UTC | 237 km ESE of Attu Station, Alaska |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.