M4.1 earthquake — 138 km SW of Adak, Alaska
An magnitude 4.1 earthquake occurred 138 km SW of Adak, Alaska on Aug 19, 2026 at 08:22 UTC. The epicenter was at a depth of 19 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 | M4.1 |
|---|---|
| Depth | 18.7 km |
| Coordinates | 51.162, -178.268 |
| Time | Aug 19, 08:22 UTC |
| Location | 138 km SW of Adak, Alaska |
| USGS event ID | aka2026qjlumy |
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 |
|---|---|---|---|
| M2.9 | 31 km | Aug 19, 01:27 UTC | 118 km WSW of Adak, Alaska |
| M2.9 | 36 km | Aug 18, 11:00 UTC | 102 km SW of Adak, Alaska |
| M2.5 | 39 km | Aug 19, 10:44 UTC | 102 km WSW of Adak, Alaska |
| M2.5 | 82 km | Aug 16, 08:06 UTC | 165 km W of Adak, Alaska |
| M2.8 | 95 km | Aug 18, 17:59 UTC | 224 km WSW of Adak, Alaska |
| M2.6 | 113 km | Aug 18, 13:03 UTC | 244 km WSW of Adak, Alaska |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.