Alaska earthquakes

M2.5 earthquake 233 km SE of Chiniak, Alaska

A magnitude 2.5 earthquake struck 233 km SE of Chiniak, Alaska on Mon, Feb 8, 2021, 8:51 AM AKST (17:51 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.1 259 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: 2.5 (ml), micro
Local time: Mon, Feb 8, 2021, 8:51 AM AKST
UTC: 2021-02-08 17:51:29 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.005° N, 149.830° 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 8.3 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.09
Depth from: Operator assigned
Station coverage gap: 222°, poorly surrounded by stations
Stations used: 21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 34 in the 60 days after this one and 12 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000dk9u (also filed as ak0211ssdwq0). Read Fri, Sep 25, 2026, 12:24 PM UTC.