Alaska earthquakes

M2.8 earthquake 17 km NE of Atka, Alaska

A magnitude 2.8 earthquake struck 17 km NE of Atka, Alaska on Thu, Aug 6, 2020, 10:40 PM HADT (07:40 UTC), 206 km (128 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: 2.8 (ml), micro
Local time: Thu, Aug 6, 2020, 10:40 PM HADT
UTC: 2020-08-07 07:40:46 UTC
Depth: 205.6 km (127.7 mi), intermediate-depth
Epicenter: 52.314° N, 174.038° 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 30.5 km horizontally, 5.9 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 153°
Stations used: 33

Nearby

Within 100 km, magnitude 1.5 and up: 90 in the 60 days after this one and 49 in the 30 days before it.

After

The first 60 of 90.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000bjsz (also filed as ak020a3yn6ct). Read Tue, Sep 29, 2026, 2:41 PM UTC.