M4.5 earthquake — 158 km S of False Pass, Alaska
An magnitude 4.5 earthquake occurred 158 km S of False Pass, Alaska on Oct 21, 2026 at 12:03 UTC. The epicenter was at a depth of 20 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 | M4.5 |
|---|---|
| Depth | 20.5 km |
| Coordinates | 53.426, -163.461 |
| Time | Oct 21, 12:03 UTC |
| Location | 158 km S of False Pass, Alaska |
| USGS event ID | us6000u3tn |
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 |
|---|---|---|---|
| M2.8 | 81 km | Oct 16, 05:42 UTC | 94 km ESE of Akutan, Alaska |
| M3.0 | 107 km | Oct 18, 07:43 UTC | 72 km SE of Akutan, Alaska |
| M2.9 | 113 km | Oct 16, 00:37 UTC | 87 km SSE of Akutan, Alaska |
| M2.5 | 133 km | Oct 18, 12:18 UTC | 124 km SE of Unalaska, Alaska |
| M3.7 | 136 km | Oct 17, 16:34 UTC | 35 km SW of False Pass, Alaska |
| M3.6 | 144 km | Oct 19, 19:54 UTC | 87 km SE of Unalaska, Alaska |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.