Alaska earthquakes

M2.3 earthquake 21 km SSE of Atka, Alaska

A magnitude 2.3 earthquake struck 21 km SSE of Atka, Alaska on Wed, Aug 10, 2016, 1:16 PM HADT (22:16 UTC), 106 km (66 mi) below the surface.

A larger quake followed: M4.8 88 km SSE 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
UTC
2016-08-10 22:16:04 UTC
Depth
106.3 km (66.1 mi), intermediate-depth
Epicenter
52.010° N, 174.115° 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
15

Nearby

Within 100 km, magnitude 1.5 and up: 78 in the 60 days after this one and 57 in the 30 days before it.

After

The first 60 of 78.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak016a961d9a. Read Sun, Oct 4, 2026, 2:47 PM UTC.