EarthquakeStrong

M5.1 earthquake - Rat Islands, Aleutian Islands, Alaska

Name: M5.1 earthquake - Rat Islands, Aleutian Islands, Alaska
Start: 2021-10-23T03:10:03.225+00:00
Location: Rat Islands, Aleutian Islands, Alaska

1819 d ago · 23 Oct 2021, 03:10 UTC Rat Islands, Aleutian Islands, Alaska

What happened

A magnitude 5.1 earthquake struck Rat Islands, Aleutian Islands, Alaska on 23 Oct 2021, 03:10 UTC at a depth of 55 km.

Earthquakes of this size are classed as Moderate. Can damage poorly built structures close to the epicentre. This was a shallow earthquake, which tends to be felt more strongly at the surface.

Timeline

First reported by USGS
16 Oct 2026, 20:47 UTC

Community

Did you feel it?

Nearby in the last 30 days

2.5
M2.5 earthquake - Rat Islands, Aleutian Islands, Alaska
23 h ago56 km deep
Light
2.6
M2.6 earthquake - 294 km W of Adak, Alaska
1 d ago65 km deep
Light
3.9
M3.9 earthquake - 294 km ESE of Attu Station, Alaska
2 d ago8 km deep
Light
2.8
M2.8 earthquake - Rat Islands, Aleutian Islands, Alaska
3 d ago7 km deep
Light
3.4
M3.4 earthquake - Rat Islands, Aleutian Islands, Alaska
4 d ago27 km deep
Light
3.1
M3.1 earthquake - Rat Islands, Aleutian Islands, Alaska
4 d ago17 km deep
Light
3.2
M3.2 earthquake - Rat Islands, Aleutian Islands, Alaska
4 d ago13 km deep
Light
4.4
M4.4 earthquake - 275 km W of Adak, Alaska
5 d ago95 km deep
Moderate
4.6
M4.6 earthquake - Rat Islands, Aleutian Islands, Alaska
19 d ago43 km deep
Moderate