Alaska earthquakes

M4.2 earthquake 205 km SE of Chiniak, Alaska

A magnitude 4.2 earthquake struck 205 km SE of Chiniak, Alaska on Fri, Oct 2, 2020, 2:06 AM AKDT (10:06 UTC), 10 km (6 mi) below the surface.

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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: 4.2 (mb), light
Local time: Fri, Oct 2, 2020, 2:06 AM AKDT
UTC: 2020-10-02 10:06:41 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.532° N, 149.541° 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 6.2 km horizontally, 1.8 km in depth
Magnitude uncertainty: ±0.10
Depth from: Operator assigned
Station coverage gap: 81°
Stations used: 94

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 27 in the 60 days after this one and 16 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000c4p0 (also filed as ak020combhwf). Read Sat, Sep 26, 2026, 2:39 AM UTC.