Alaska earthquakes

M3.1 earthquake 47 km ESE of False Pass, Alaska

A magnitude 3.1 earthquake struck 47 km ESE of False Pass, Alaska on Wed, Jun 21, 2023, 1:56 AM AKDT (09:56 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M4.0 Alaska Peninsula. This one was a foreshock.

King Cove forecast More in Alaska

Map

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

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The earthquake

Magnitude: 3.1 (ml), minor
Local time: Wed, Jun 21, 2023, 1:56 AM AKDT
UTC: 2023-06-21 09:56:04 UTC
Depth: 6.3 km (3.9 mi), shallow
Epicenter: 54.669° N, 162.739° 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 3.3 km horizontally, 2.2 km in depth
Magnitude uncertainty: ±0.09
Depth from: From location
Station coverage gap: 185°, poorly surrounded by stations
Stations used: 33

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

King Cove, AlaskaPopulation 1,009. Forecast51 kmSSW

Nearby

Within 100 km, magnitude 1.5 and up: 170 in the 60 days after this one and 68 in the 30 days before it.

After

The first 60 of 170.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000kapu (also filed as ak0237wm4m23). Read Mon, Sep 28, 2026, 12:29 PM UTC.