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.

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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
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.

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 todayAlaska earthquakesLive 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.