Alaska earthquakes

M2.5 earthquake 71 km SSW of False Pass, Alaska

A magnitude 2.5 earthquake struck 71 km SSW of False Pass, Alaska on Thu, Jul 20, 2023, 8:27 AM AKDT (16:27 UTC), 80 km (50 mi) below the surface.

A larger quake followed: M5.0 101 km ESE of Akutan, Alaska. 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
2.5 (ml), micro
Local time
UTC
2023-07-20 16:27:25 UTC
Depth
79.8 km (49.6 mi), intermediate-depth
Epicenter
54.303° N, 163.986° 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 6.4 km horizontally, 26.4 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
177°
Stations used
20

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 149 in the 60 days after this one and 59 in the 30 days before it.

After

The first 60 of 149.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000kwap (also filed as ak02398opj89). Read Mon, Sep 28, 2026, 12:49 AM UTC.