Alaska earthquakes

M2.4 earthquake 133 km W of Adak, Alaska

A magnitude 2.4 earthquake struck 133 km W of Adak, Alaska on Fri, Jan 5, 2018, 9:37 PM HAST (07:37 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M4.3 148 km WSW of Adak, Alaska. This one was a foreshock.

Map

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

Open the live map with earthquakes

The earthquake

Magnitude: 2.4 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Fri, Jan 5, 2018, 9:37 PM HAST
UTC: 2018-01-06 07:37:37 UTC
Depth: 14.8 km (9.2 mi), shallow
Epicenter: 51.660° N, 178.544° W
Region: Alaska
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
2.4	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
1.34	ML, local (Richter)	AV	Final · ±0.077 · 2 stations

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: 18

Nearby

Within 100 km, magnitude 1.5 and up: 196 in the 60 days after this one and 83 in the 30 days before it.

After

The first 60 of 196.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak018a1m4kb (also filed as ak18027814, av65069672). Read Fri, Oct 2, 2026, 12:01 PM UTC.