M4.0 earthquake — 166 km SW of Nikolski, Alaska
An magnitude 4.0 earthquake occurred 166 km SW of Nikolski, Alaska on Sep 19, 2026 at 08:47 UTC. The epicenter was at a depth of 13 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 | 12.9 km |
| Coordinates | 52.014, -170.792 |
| Time | Sep 19, 08:47 UTC |
| Location | 166 km SW of Nikolski, Alaska |
| USGS event ID | aka2026sotica |
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 |
|---|---|---|---|
| M3.0 | 10 km | Sep 17, 16:33 UTC | 168 km SW of Nikolski, Alaska |
| M3.5 | 14 km | Sep 20, 19:15 UTC | 168 km SW of Nikolski, Alaska |
| M3.5 | 22 km | Sep 21, 02:38 UTC | 145 km SW of Nikolski, Alaska |
| M3.8 | 23 km | Sep 18, 05:43 UTC | 169 km WSW of Nikolski, Alaska |
| M3.2 | 23 km | Sep 17, 16:04 UTC | 162 km WSW of Nikolski, Alaska |
| M3.6 | 24 km | Sep 21, 10:00 UTC | 167 km WSW of Nikolski, Alaska |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.