Alaska earthquakes

M3.2 earthquake 79 km E of Adak, Alaska

A magnitude 3.2 earthquake struck 79 km E of Adak, Alaska on Tue, Sep 11, 2018, 2:55 PM HADT (23:55 UTC), 74 km (46 mi) below the surface.

A larger quake followed: M4.1 39 km S of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude
3.2 (ML, local (Richter)), minor
Magnitude from
Alaska Earthquake Center
Local time
UTC
2018-09-11 23:55:47 UTC
Depth
74.0 km (46.0 mi), intermediate-depth
Epicenter
51.968° N, 175.485° 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
21

Nearby

Within 100 km, magnitude 1.5 and up: 115 in the 60 days after this one and 80 in the 30 days before it.

After

The first 60 of 115.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak018bogj0cx. Read Fri, Oct 2, 2026, 1:51 AM UTC.