M2.5 earthquake — 149 km SW of Adak, Alaska
An magnitude 2.5 earthquake occurred 149 km SW of Adak, Alaska on Sep 11, 2026 at 18:09 UTC. The epicenter was at a depth of 21 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 | 20.7 km |
| Coordinates | 51.136, -178.438 |
| Time | Sep 11, 18:09 UTC |
| Location | 149 km SW of Adak, Alaska |
| USGS event ID | aka2026sarwnb |
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 |
|---|---|---|---|
| M3.5 | 2 km | Sep 12, 03:43 UTC | 151 km SW of Adak, Alaska |
| M2.5 | 3 km | Sep 11, 11:13 UTC | 151 km SW of Adak, Alaska |
| M4.3 | 3 km | Sep 11, 10:52 UTC | 151 km SW of Adak, Alaska |
| M2.5 | 3 km | Sep 11, 12:06 UTC | 152 km WSW of Adak, Alaska |
| M3.1 | 5 km | Sep 11, 10:51 UTC | 152 km SW of Adak, Alaska |
| M2.7 | 7 km | Sep 11, 14:14 UTC | 151 km SW 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.