M3.8 earthquake — 86 km SSW of Unalaska, Alaska
An magnitude 3.8 earthquake occurred 86 km SSW of Unalaska, Alaska on Oct 18, 2026 at 08:02 UTC. The epicenter was at a depth of 40 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 | M3.8 |
|---|---|
| Depth | 39.8 km |
| Coordinates | 53.151, -167.005 |
| Time | Oct 18, 08:02 UTC |
| Location | 86 km SSW of Unalaska, Alaska |
| USGS event ID | us6000u34h |
What this magnitude typically means
Minor earthquakes are often felt close to the epicenter but almost never cause damage. Whether you feel one at all depends on how near and how shallow it is. 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 |
|---|---|---|---|
| M3.6 | 94 km | Oct 19, 19:54 UTC | 87 km SE of Unalaska, Alaska |
| M2.5 | 112 km | Oct 18, 12:18 UTC | 124 km SE of Unalaska, Alaska |
| M2.9 | 126 km | Oct 16, 00:37 UTC | 87 km SSE of Akutan, Alaska |
| M3.1 | 137 km | Oct 16, 14:59 UTC | 173 km SE of Nikolski, Alaska |
| M3.0 | 141 km | Oct 18, 07:43 UTC | 72 km SE of Akutan, Alaska |
| M2.8 | 194 km | Oct 16, 05:42 UTC | 94 km ESE of Akutan, Alaska |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.