Alaska earthquakes

M2.7 earthquake 55 km NNW of Atka, Alaska

A magnitude 2.7 earthquake struck 55 km NNW of Atka, Alaska on Fri, Feb 12, 2021, 12:13 PM HAST (22:13 UTC), 189 km (118 mi) below the surface.

A larger quake followed: M4.7 37 km SSW of Atka, 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: 2.7 (ml), micro
Local time: Fri, Feb 12, 2021, 12:13 PM HAST
UTC: 2021-02-12 22:13:09 UTC
Depth: 189.2 km (117.5 mi), intermediate-depth
Epicenter: 52.617° N, 174.634° 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 26.9 km horizontally, 21.4 km in depth
Magnitude uncertainty: ±0.15
Depth from: From location
Station coverage gap: 251°, poorly surrounded by stations
Stations used: 14

Nearby

Within 100 km, magnitude 1.5 and up: 48 in the 60 days after this one and 26 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000ddtx (also filed as ak0211zha9nd). Read Sat, Sep 26, 2026, 3:41 PM UTC.