Alaska earthquakes

M2.7 earthquake 28 km SW of Atka, Alaska

A magnitude 2.7 earthquake struck 28 km SW of Atka, Alaska on Fri, Mar 31, 2023, 10:33 AM HADT (19:33 UTC), 100 km (62 mi) below the surface.

A larger quake followed: M4.5 91 km ESE of Adak, 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: 2.7 (ml), micro
Local time: Fri, Mar 31, 2023, 10:33 AM HADT
UTC: 2023-03-31 19:33:12 UTC
Depth: 100.1 km (62.2 mi), intermediate-depth
Epicenter: 52.007° N, 174.483° 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.

Location uncertainty: About 10.9 km horizontally, 12.6 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 196°, poorly surrounded by stations
Stations used: 16

Nearby

Within 100 km, magnitude 1.5 and up: 64 in the 60 days after this one and 22 in the 30 days before it.

After

The first 60 of 64.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000k2iu (also filed as ak023455vkko). Read Wed, Sep 30, 2026, 10:22 PM UTC.