M4.0 earthquake — 161 km S of Nikolski, Alaska
An magnitude 4.0 earthquake occurred 161 km S of Nikolski, Alaska on Oct 19, 2026 at 05:08 UTC. The epicenter was at a depth of 10 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 | 10.0 km |
| Coordinates | 51.515, -168.422 |
| Time | Oct 19, 05:08 UTC |
| Location | 161 km S of Nikolski, Alaska |
| USGS event ID | us6000u3a4 |
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 |
|---|---|---|---|
| M2.5 | 90 km | Oct 19, 22:59 UTC | 85 km SSW of Nikolski, Alaska |
| M3.7 | 90 km | Oct 19, 11:44 UTC | 123 km SSW of Nikolski, Alaska |
| M3.1 | 95 km | Oct 19, 12:34 UTC | 121 km SSW of Nikolski, Alaska |
| M3.7 | 121 km | Oct 23, 09:18 UTC | 40 km SSE of Nikolski, Alaska |
| M3.2 | 133 km | Oct 24, 01:42 UTC | 135 km SW of Nikolski, Alaska |
| M2.5 | 178 km | Oct 21, 13:38 UTC | 139 km S of Unalaska, Alaska |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.