Alaska earthquakes

M2.3 earthquake 152 km S of Atka, Alaska

A magnitude 2.3 earthquake struck 152 km S of Atka, Alaska on Mon, Jan 22, 2018, 4:00 PM HAST (02:00 UTC), 30 km (19 mi) below the surface.

A larger quake followed: M3.8 108 km SSE of Atka, Alaska. This one was a foreshock.

More in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
2.3 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2018-01-23 02:00:53 UTC
Depth
30.0 km (18.6 mi), shallow
Epicenter
50.843° N, 173.828° 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: 43 in the 60 days after this one and 42 in the 30 days before it.

After

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak018122jyo4 (also filed as ak18231743). Read Mon, Oct 5, 2026, 9:18 AM UTC.