Alaska earthquakes

M2.3 earthquake 40 km ENE of Atka, Alaska

A magnitude 2.3 earthquake struck 40 km ENE of Atka, Alaska on Sat, Sep 3, 2016, 5:57 AM HADT (14:57 UTC), 78 km (48 mi) below the surface.

A larger quake followed: M5.0 73 km SE of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.3 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Sat, Sep 3, 2016, 5:57 AM HADT
UTC: 2016-09-03 14:57:07 UTC
Depth: 77.6 km (48.2 mi), intermediate-depth
Epicenter: 52.329° N, 173.646° 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: 35 in the 60 days after this one and 43 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak016bcqf0u9 (also filed as ak13979288). Read Mon, Oct 5, 2026, 10:56 AM UTC.