Alaska earthquakes

M3.4 earthquake 229 km SE of Chiniak, Alaska

A magnitude 3.4 earthquake struck 229 km SE of Chiniak, Alaska on Sun, Apr 12, 2020, 11:56 AM AKDT (19:56 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.7 229 km SE of Chiniak, 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: 3.4 (ml), minor
Local time: Sun, Apr 12, 2020, 11:56 AM AKDT
UTC: 2020-04-12 19:56:19 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.078° N, 149.779° 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 7.6 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.05
Depth from: Operator assigned
Station coverage gap: 191°, poorly surrounded by stations
Stations used: 39

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 50 in the 60 days after this one and 20 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us700090f5 (also filed as ak0204qo03j8). Read Sat, Sep 26, 2026, 4:04 PM UTC.