Alaska earthquakes

M2.8 earthquake 139 km E of Atka, Alaska

A magnitude 2.8 earthquake struck 139 km E of Atka, Alaska on Fri, Jun 12, 2020, 1:56 PM HADT (22:56 UTC), 112 km (70 mi) below the surface.

A larger quake followed: M4.5 184 km E of Atka, Alaska. This one was a foreshock.

More in Alaska

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
2.8 (ml), micro
Local time
UTC
2020-06-12 22:56:19 UTC
Depth
112.3 km (69.8 mi), intermediate-depth
Epicenter
52.390° N, 172.186° 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 12.3 km horizontally, 23.2 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
193°, poorly surrounded by stations
Stations used
21

Nearby

Within 100 km, magnitude 1.5 and up: 37 in the 60 days after this one and 16 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 us6000acct (also filed as ak0207jlkjaw). Read Tue, Sep 29, 2026, 3:32 PM UTC.