Alaska earthquakes

M2.6 earthquake 37 km NW of Atka, Alaska

A magnitude 2.6 earthquake struck 37 km NW of Atka, Alaska on Mon, Sep 14, 2020, 7:45 PM HADT (04:45 UTC), 220 km (137 mi) below the surface.

A larger quake followed: M5.3 76 km SW of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude
2.6 (ml), micro
Local time
UTC
2020-09-15 04:45:14 UTC
Depth
220.4 km (137.0 mi), intermediate-depth
Epicenter
52.388° N, 174.657° 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 21.3 km horizontally, 10.0 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
170°
Stations used
23

Nearby

Within 100 km, magnitude 1.5 and up: 83 in the 60 days after this one and 47 in the 30 days before it.

After

The first 60 of 83.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000c1fa (also filed as ak020bweual6). Read Mon, Sep 28, 2026, 7:38 AM UTC.