Alaska earthquakes

M2.1 earthquake 6 km SSW of Adak, Alaska

A magnitude 2.1 earthquake struck 6 km SSW of Adak, Alaska on Fri, Apr 28, 2017, 8:51 AM HADT (17:51 UTC), 75 km (46 mi) below the surface.

A larger quake followed: M5.9 95 km SSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.1 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Fri, Apr 28, 2017, 8:51 AM HADT
UTC: 2017-04-28 17:51:42 UTC
Depth: 74.6 km (46.4 mi), intermediate-depth
Epicenter: 51.818° N, 176.663° 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: 11

Nearby

Within 100 km, magnitude 1.5 and up: 153 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of 153.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0175ffuce3 (also filed as ak15928698). Read Sat, Oct 3, 2026, 12:24 AM UTC.