Alaska earthquakes

M4.2 earthquake 50 km NNW of Atka, Alaska

A magnitude 4.2 earthquake struck 50 km NNW of Atka, Alaska on Sun, Jan 7, 2024, 12:18 PM HAST (22:18 UTC), 177 km (110 mi) below the surface.

A larger quake followed: M4.4 74 km WNW of Atka, Alaska. This one was a foreshock.

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

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The earthquake

Magnitude
4.2 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2024-01-07 22:18:17 UTC
Depth
176.9 km (109.9 mi), intermediate-depth
Epicenter
52.628° N, 174.441° 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.ScaleComputed byNotes
4.2mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.083 · 41 stations
3.7ML, local (Richter)Alaska Earthquake CenterPreliminary

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 12.3 km horizontally, 7.2 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
93°
Stations used
49

Nearby

Within 100 km, magnitude 1.5 and up: 54 in the 60 days after this one and 31 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 us6000m422 (also filed as ak024bxyvjb). Read Thu, Oct 1, 2026, 12:27 PM UTC.