Alaska earthquakes

M2.2 earthquake 30 km NW of Adak, Alaska

A magnitude 2.2 earthquake struck 30 km NW of Adak, Alaska on Sat, Sep 1, 2018, 10:55 AM HADT (19:55 UTC), 121 km (75 mi) below the surface.

A larger quake followed: M4.5 47 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.2 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Sat, Sep 1, 2018, 10:55 AM HADT
UTC: 2018-09-01 19:55:02 UTC
Depth: 120.7 km (75.0 mi), intermediate-depth
Epicenter: 52.045° N, 176.986° 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: 27

Nearby

Within 100 km, magnitude 1.5 and up: 186 in the 60 days after this one and 147 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 ak018b7urplg (also filed as ak20239369). Read Thu, Oct 1, 2026, 11:26 PM UTC.