M4.0 earthquake — 232 km ESE of Attu Station, Alaska
An magnitude 4.0 earthquake occurred 232 km ESE of Attu Station, Alaska on Aug 22, 2026 at 19:19 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 | M4.0 |
|---|---|
| Depth | 10.0 km |
| Coordinates | 52.010, 176.326 |
| Time | Aug 22, 19:19 UTC |
| Location | 232 km ESE of Attu Station, Alaska |
| USGS event ID | us6000tmwj |
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 |
|---|---|---|---|
| M3.1 | 1 km | Aug 20, 21:50 UTC | 233 km ESE of Attu Station, Alaska |
| M3.0 | 1 km | Aug 20, 01:31 UTC | 232 km ESE of Attu Station, Alaska |
| M3.0 | 1 km | Aug 20, 22:06 UTC | 233 km ESE of Attu Station, Alaska |
| M3.6 | 2 km | Aug 20, 10:53 UTC | 231 km ESE of Attu Station, Alaska |
| M3.4 | 2 km | Aug 21, 01:49 UTC | 235 km ESE of Attu Station, Alaska |
| M3.2 | 3 km | Aug 18, 06:12 UTC | 229 km ESE of Attu Station, Alaska |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.