Alaska earthquakes

M2.3 earthquake 30 km SW of Atka, Alaska

A magnitude 2.3 earthquake struck 30 km SW of Atka, Alaska on Wed, Jun 30, 2021, 1:26 PM HADT (22:26 UTC), 76 km (47 mi) below the surface.

A larger quake followed: M5.0 49 km ESE of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
2.3 (ml), micro
Local time
UTC
2021-06-30 22:26:53 UTC
Depth
75.9 km (47.2 mi), intermediate-depth
Epicenter
52.012° N, 174.539° 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.

Stations used
24

Nearby

Within 100 km, magnitude 1.5 and up: 179 in the 60 days after this one and 11 in the 30 days before it.

After

The first 60 of 179.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0218bpj58x. Read Sun, Sep 27, 2026, 4:42 AM UTC.