Alaska earthquakes

M2.9 earthquake 233 km SE of Chiniak, Alaska

A magnitude 2.9 earthquake struck 233 km SE of Chiniak, Alaska on Wed, Aug 12, 2020, 4:53 PM AKDT (00:53 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M4.2 205 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: 2.9 (ml), micro
Local time: Wed, Aug 12, 2020, 4:53 PM AKDT
UTC: 2020-08-13 00:53:03 UTC
Depth: 22.1 km (13.7 mi), shallow
Epicenter: 56.028° N, 149.778° 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 6.6 km horizontally, 10.6 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 199°, poorly surrounded by stations
Stations used: 50

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 30 in the 60 days after this one and 39 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000bfc3 (also filed as ak020adrruli). Read Fri, Sep 25, 2026, 10:22 PM UTC.