Alaska earthquakes

M2.5 earthquake 35 km N of False Pass, Alaska

A magnitude 2.5 earthquake struck 35 km N of False Pass, Alaska on Mon, Jul 31, 2023, 5:37 AM AKDT (13:37 UTC), 153 km (95 mi) below the surface.

A larger quake followed: M3.2 39 km SW of False Pass, 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
2023-07-31 13:37:40 UTC
Depth
153.3 km (95.2 mi), intermediate-depth
Epicenter
55.173° N, 163.490° 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 10.7 km horizontally, 7.3 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
197°, poorly surrounded by stations
Stations used
21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 42 in the 60 days after this one and 19 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000kzgp (also filed as ak0239qtw8ca). Read Mon, Sep 28, 2026, 9:30 AM UTC.