Alaska earthquakes

M2.8 earthquake 121 km SE of Atka, Alaska

A magnitude 2.8 earthquake struck 121 km SE of Atka, Alaska on Sun, Jul 26, 2020, 7:13 AM HADT (16:13 UTC), 156 km (97 mi) below the surface.

A larger quake followed: M3.9 30 km ESE of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.8 (ml), micro
Local time: Sun, Jul 26, 2020, 7:13 AM HADT
UTC: 2020-07-26 16:13:32 UTC
Depth: 156.4 km (97.2 mi), intermediate-depth
Epicenter: 51.530° N, 172.798° 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 16.9 km horizontally, 22.5 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 215°, poorly surrounded by stations
Stations used: 24

Nearby

Within 100 km, magnitude 1.5 and up: 49 in the 60 days after this one and 24 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 us6000b4ib (also filed as ak0209k9e0bz). Read Tue, Sep 29, 2026, 5:36 PM UTC.