Alaska earthquakes

M3.8 earthquake 104 km ENE of Atka, Alaska

A magnitude 3.8 earthquake struck 104 km ENE of Atka, Alaska on Sat, Feb 17, 2024, 3:09 AM HAST (13:09 UTC), 162 km (101 mi) below the surface.

A larger quake followed: M4.9 189 km E 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
3.8 (mb, body-wave), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2024-02-17 13:09:05 UTC
Depth
162.4 km (100.9 mi), intermediate-depth
Epicenter
52.477° N, 172.734° 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
3.8mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.161 · 10 stations
3.6ML, 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 10.4 km horizontally, 9.4 km in depth
Magnitude uncertainty
±0.16
Depth from
From location
Station coverage gap
174°
Stations used
38

Nearby

Within 100 km, magnitude 1.5 and up: 39 in the 60 days after this one and 23 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 us7000m0th (also filed as ak02427ll9np). Read Thu, Oct 1, 2026, 6:13 AM UTC.