M4.0 earthquake — 77 km SSW of Nikolski, Alaska
An magnitude 4.0 earthquake occurred 77 km SSW of Nikolski, Alaska on Sep 8, 2026 at 23:02 UTC. The epicenter was at a depth of 49 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 | 49.3 km |
| Coordinates | 52.333, -169.425 |
| Time | Sep 8, 23:02 UTC |
| Location | 77 km SSW of Nikolski, Alaska |
| USGS event ID | us7000tfy4 |
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 |
|---|---|---|---|
| M3.4 | 7 km | Sep 9, 00:23 UTC | 73 km SW of Nikolski, Alaska |
| M4.9 | 9 km | Sep 5, 18:00 UTC | 80 km SSW of Nikolski, Alaska |
| M3.6 | 15 km | Sep 8, 18:00 UTC | 92 km SSW of Nikolski, Alaska |
| M2.8 | 17 km | Sep 5, 04:09 UTC | 93 km SSW of Nikolski, Alaska |
| M2.8 | 19 km | Sep 6, 07:49 UTC | 90 km SSW of Nikolski, Alaska |
| M2.7 | 20 km | Sep 5, 09:08 UTC | 95 km SSW of Nikolski, Alaska |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.