Alaska earthquakes

M2.4 earthquake 60 km SSE of Adak, Alaska

A magnitude 2.4 earthquake struck 60 km SSE of Adak, Alaska on Fri, Oct 20, 2017, 2:28 AM HADT (11:28 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M4.9 82 km SW of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.4 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Fri, Oct 20, 2017, 2:28 AM HADT
UTC: 2017-10-20 11:28:43 UTC
Depth: 13.0 km (8.1 mi), shallow
Epicenter: 51.352° N, 176.388° W
Region: Alaska
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used: 14

Nearby

Within 100 km, magnitude 1.5 and up: 144 in the 60 days after this one and 46 in the 30 days before it.

After

The first 60 of 144.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017dgr6js6 (also filed as ak17093844). Read Fri, Oct 2, 2026, 10:13 PM UTC.