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
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 todayAlaska earthquakesLive 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.