Alaska earthquakes

M2.8 earthquake 79 km WNW of False Pass, Alaska

A magnitude 2.8 earthquake struck 79 km WNW of False Pass, Alaska on Sun, Aug 13, 2023, 11:34 AM AKDT (19:34 UTC), 196 km (122 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
2.8 (ml), micro
Local time
UTC
2023-08-13 19:34:29 UTC
Depth
195.7 km (121.6 mi), intermediate-depth
Epicenter
55.239° N, 164.452° 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 16.4 km horizontally, 10.0 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
201°, poorly surrounded by stations
Stations used
23

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 34 in the 60 days after this one and 9 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000kryf (also filed as ak023acffodb). Read Mon, Sep 28, 2026, 3:08 AM UTC.