M3.3 earthquake — 237 km SE of Attu Station, Alaska
An magnitude 3.3 earthquake occurred 237 km SE of Attu Station, Alaska on Oct 21, 2026 at 13:57 UTC. The epicenter was at a depth of 5 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 | M3.3 |
|---|---|
| Depth | 5.0 km |
| Coordinates | 51.268, 175.515 |
| Time | Oct 21, 13:57 UTC |
| Location | 237 km SE of Attu Station, Alaska |
| USGS event ID | aka2026uwgjcy |
What this magnitude typically means
Minor earthquakes are often felt close to the epicenter but almost never cause damage. Whether you feel one at all depends on how near and how shallow it is. 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 |
|---|---|---|---|
| M4.2 | 200 km | Oct 19, 16:27 UTC | Rat Islands, Aleutian Islands, Alaska |
| M2.5 | 217 km | Oct 21, 00:13 UTC | Rat Islands, Aleutian Islands, Alaska |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.