M3.9 earthquake — Rat Islands, Aleutian Islands, Alaska
An magnitude 3.9 earthquake occurred Rat Islands, Aleutian Islands, Alaska on Aug 19, 2026 at 16:49 UTC. The epicenter was at a depth of 120 km — an intermediate-depth earthquake. Intermediate quakes spread their energy over a wider area and are often felt across a broad region.
Event data
| Magnitude | M3.9 |
|---|---|
| Depth | 119.9 km |
| Coordinates | 51.726, 178.919 |
| Time | Aug 19, 16:49 UTC |
| Location | Rat Islands, Aleutian Islands, Alaska |
| USGS event ID | aka2026qkcrxb |
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 | 43 km | Aug 19, 18:12 UTC | Rat Islands, Aleutian Islands, Alaska |
| M2.7 | 48 km | Aug 18, 10:20 UTC | Rat Islands, Aleutian Islands, Alaska |
| M3.1 | 72 km | Aug 21, 11:22 UTC | 261 km WSW of Adak, Alaska |
| M3.7 | 75 km | Aug 19, 12:12 UTC | Rat Islands, Aleutian Islands, Alaska |
| M4.0 | 87 km | Aug 20, 02:45 UTC | Rat Islands, Aleutian Islands, Alaska |
| M2.6 | 118 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.