M3.1 earthquake — 261 km WSW of Adak, Alaska
An magnitude 3.1 earthquake occurred 261 km WSW of Adak, Alaska on Aug 21, 2026 at 11:22 UTC. The epicenter was at a depth of 22 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 | M3.1 |
|---|---|
| Depth | 22.3 km |
| Coordinates | 51.300, 179.707 |
| Time | Aug 21, 11:22 UTC |
| Location | 261 km WSW of Adak, Alaska |
| USGS event ID | aka2026qnjvsi |
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 |
|---|---|---|---|
| M2.6 | 46 km | Aug 18, 13:03 UTC | 244 km WSW of Adak, Alaska |
| M2.8 | 51 km | Aug 18, 17:59 UTC | 224 km WSW of Adak, Alaska |
| M3.9 | 72 km | Aug 19, 16:49 UTC | Rat Islands, Aleutian Islands, Alaska |
| M4.0 | 76 km | Aug 20, 02:45 UTC | Rat Islands, Aleutian Islands, Alaska |
| M2.9 | 96 km | Aug 19, 18:12 UTC | Rat Islands, Aleutian Islands, Alaska |
| M2.5 | 101 km | Aug 16, 08:06 UTC | 165 km W of Adak, Alaska |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.