Alaska earthquakes

M2.3 earthquake 177 km WSW of Adak, Alaska

A magnitude 2.3 earthquake struck 177 km WSW of Adak, Alaska on Mon, May 16, 2016, 2:00 PM HADT (23:00 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M5.3 130 km WSW 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: Mon, May 16, 2016, 2:00 PM HADT
UTC: 2016-05-16 23:00:39 UTC
Depth: 15.9 km (9.9 mi), shallow
Epicenter: 51.312° N, 179.034° 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: 12

Nearby

Within 100 km, magnitude 1.5 and up: 186 in the 60 days after this one and 93 in the 30 days before it.

After

The first 60 of 186.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0166ayblm3 (also filed as ak13590024). Read Sun, Oct 4, 2026, 11:03 PM UTC.