Alaska earthquakes

M2.5 earthquake 57 km SE of False Pass, Alaska

A magnitude 2.5 earthquake struck 57 km SE of False Pass, Alaska on Sat, Aug 21, 2021, 12:52 AM AKDT (08:52 UTC), 94 km (59 mi) below the surface.

A larger quake followed: M2.6 103 km S of False Pass, Alaska. 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: 2.5 (ml), micro
Local time: Sat, Aug 21, 2021, 12:52 AM AKDT
UTC: 2021-08-21 08:52:10 UTC
Depth: 94.3 km (58.6 mi), intermediate-depth
Epicenter: 54.513° N, 162.733° 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 6.5 km horizontally, 7.5 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 176°
Stations used: 31

Nearest places

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

King Cove, AlaskaPopulation 1,009. Forecast66 kmSSW

Nearby

Within 100 km, magnitude 1.5 and up: 88 in the 60 days after this one and 61 in the 30 days before it.

After

The first 60 of 88.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000f6hc (also filed as ak021aphahyw). Read Wed, Sep 23, 2026, 4:16 AM UTC.