M2.5 earthquake — 152 km SW of Adak, Alaska
An magnitude 2.5 earthquake occurred 152 km SW of Adak, Alaska on Sep 11, 2026 at 11:40 UTC. The epicenter was at a depth of 17 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 | M2.5 |
|---|---|
| Depth | 17.2 km |
| Coordinates | 51.056, -178.400 |
| Time | Sep 11, 11:40 UTC |
| Location | 152 km SW of Adak, Alaska |
| USGS event ID | aka2026saexhu |
What this magnitude typically means
Very small earthquakes are usually only detected by instruments and are rarely felt. They are a normal part of background seismic activity. 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 | 4 km | Sep 11, 10:51 UTC | 152 km SW of Adak, Alaska |
| M3.2 | 4 km | Sep 9, 18:48 UTC | 155 km SW of Adak, Alaska |
| M3.4 | 5 km | Sep 6, 23:32 UTC | 156 km SW of Adak, Alaska |
| M4.3 | 6 km | Sep 11, 10:52 UTC | 151 km SW of Adak, Alaska |
| M2.5 | 18 km | Sep 11, 11:11 UTC | 135 km SW of Adak, Alaska |
| M5.3 | 20 km | Sep 11, 10:47 UTC | 151 km WSW of Adak, Alaska |
Earthquake activity in this area
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Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.