Alaska earthquakes

M2.6 earthquake 222 km SE of Chiniak, Alaska

A magnitude 2.6 earthquake struck 222 km SE of Chiniak, Alaska on Fri, Sep 18, 2020, 7:58 PM AKDT (03:58 UTC), 10 km (6 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: 2.6 (ml), micro
Local time: Fri, Sep 18, 2020, 7:58 PM AKDT
UTC: 2020-09-19 03:58:50 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.090° N, 149.927° 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 7.2 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.09
Depth from: Operator assigned
Station coverage gap: 262°, poorly surrounded by stations
Stations used: 19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 24 in the 60 days after this one and 16 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000c58p (also filed as ak020c30h4go). Read Sat, Sep 26, 2026, 1:32 AM UTC.