Alaska earthquakes

M2.3 earthquake 135 km WSW of Adak, Alaska

A magnitude 2.3 earthquake struck 135 km WSW of Adak, Alaska on Tue, Aug 16, 2016, 9:51 PM HADT (06:51 UTC), 65 km (40 mi) below the surface.

A larger quake followed: M4.4 110 km SW 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
UTC
2016-08-17 06:51:12 UTC
Depth
65.0 km (40.4 mi), shallow
Epicenter
51.443° N, 178.461° 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
30

Nearby

Within 100 km, magnitude 1.5 and up: 122 in the 60 days after this one and 87 in the 30 days before it.

After

The first 60 of 122.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak016akhhdq3. Read Sun, Oct 4, 2026, 7:41 PM UTC.