Alaska earthquakes

M2.1 earthquake 43 km SSW of Adak, Alaska

A magnitude 2.1 earthquake struck 43 km SSW of Adak, Alaska on Wed, Jun 21, 2017, 11:03 AM HADT (20:03 UTC), 52 km (32 mi) below the surface.

A larger quake followed: M5.2 27 km ESE 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: Wed, Jun 21, 2017, 11:03 AM HADT
UTC: 2017-06-21 20:03:43 UTC
Depth: 52.1 km (32.4 mi), shallow
Epicenter: 51.508° N, 176.865° 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: 20

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 72 in the 30 days before it.

After

The first 60 of at least 199.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0177wsd3kp (also filed as ak16210990). Read Fri, Oct 2, 2026, 11:51 AM UTC.