Alaska earthquakes

M2.3 earthquake 52 km SSE of Adak, Alaska

A magnitude 2.3 earthquake struck 52 km SSE of Adak, Alaska on Thu, Aug 11, 2016, 7:20 PM HADT (04:20 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M4.3 116 km SSW of Adak, 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: Thu, Aug 11, 2016, 7:20 PM HADT
UTC: 2016-08-12 04:20:16 UTC
Depth: 25.5 km (15.8 mi), shallow
Epicenter: 51.423° N, 176.435° 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: 10

Nearby

Within 100 km, magnitude 1.5 and up: 111 in the 60 days after this one and 69 in the 30 days before it.

After

The first 60 of 111.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak016ac6f53u (also filed as ak13840715). Read Sat, Oct 3, 2026, 11:31 PM UTC.