Alaska earthquakes

M2.8 earthquake 60 km WSW of Atka, Alaska

A magnitude 2.8 earthquake struck 60 km WSW of Atka, Alaska on Wed, Feb 17, 2021, 1:24 AM HAST (11:24 UTC), 67 km (41 mi) below the surface.

A larger quake followed: M3.0 28 km E of Atka, Alaska. This one was a foreshock.

Map

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

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The earthquake

Magnitude: 2.8 (ml), micro
Local time: Wed, Feb 17, 2021, 1:24 AM HAST
UTC: 2021-02-17 11:24:59 UTC
Depth: 66.8 km (41.5 mi), shallow
Epicenter: 51.919° N, 174.956° 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 11.2 km horizontally, 17.2 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 208°, poorly surrounded by stations
Stations used: 17

Nearby

Within 100 km, magnitude 1.5 and up: 135 in the 60 days after this one and 58 in the 30 days before it.

After

The first 60 of 135.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000dfwr (also filed as ak02127khp62). Read Thu, Sep 24, 2026, 9:19 AM UTC.