Alaska earthquakes

M2.6 earthquake 251 km SE of Chiniak, Alaska

A magnitude 2.6 earthquake struck 251 km SE of Chiniak, Alaska on Thu, Apr 23, 2020, 9:57 AM AKDT (17:57 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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Map

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

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The earthquake

Magnitude: 2.6 (ml), micro
Local time: Thu, Apr 23, 2020, 9:57 AM AKDT
UTC: 2020-04-23 17:57:21 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.306° N, 148.902° 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 8.5 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.05
Depth from: Operator assigned
Station coverage gap: 221°, poorly surrounded by stations
Stations used: 32

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 46 in the 60 days after this one and 25 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us700097mw (also filed as ak02058tq8c8). Read Sun, Sep 27, 2026, 3:13 PM UTC.