Alaska earthquakes

M1.8 earthquake 98 km S of False Pass, Alaska

A magnitude 1.8 earthquake struck 98 km S of False Pass, Alaska on Wed, Aug 11, 2021, 7:40 PM AKDT (03:40 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M1.9 83 km SSE of False Pass, Alaska. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.8 (ml), micro
Local time
UTC
2021-08-12 03:40:10 UTC
Depth
25.6 km (15.9 mi), shallow
Epicenter
53.973° N, 163.519° 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.

Stations used
28

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 140 in the 60 days after this one and 59 in the 30 days before it.

After

The first 60 of 140.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021aaiemw3. Read Wed, Sep 23, 2026, 2:47 PM UTC.