M3.4 earthquake — 70 km SSE of Adak, Alaska
An magnitude 3.4 earthquake occurred 70 km SSE of Adak, Alaska on Aug 21, 2026 at 01:08 UTC. The epicenter was at a depth of 6 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 | M3.4 |
|---|---|
| Depth | 6.4 km |
| Coordinates | 51.287, -176.254 |
| Time | Aug 21, 01:08 UTC |
| Location | 70 km SSE of Adak, Alaska |
| USGS event ID | us6000tmdn |
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 |
|---|---|---|---|
| M2.9 | 97 km | Aug 18, 07:16 UTC | 86 km SW of Atka, Alaska |
| M2.6 | 101 km | Aug 18, 04:26 UTC | 168 km S of Adak, Alaska |
| M2.9 | 113 km | Aug 18, 11:00 UTC | 102 km SW of Adak, Alaska |
| M2.5 | 120 km | Aug 19, 10:44 UTC | 102 km WSW of Adak, Alaska |
| M2.9 | 136 km | Aug 19, 01:27 UTC | 118 km WSW of Adak, Alaska |
| M4.1 | 141 km | Aug 19, 08:22 UTC | 138 km SW of Adak, Alaska |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.