Alaska earthquakes

M2.9 earthquake 66 km SW of Atka, Alaska

A magnitude 2.9 earthquake struck 66 km SW of Atka, Alaska on Sun, Apr 19, 2020, 8:52 PM HADT (05:52 UTC), 72 km (45 mi) below the surface.

A larger quake followed: M4.0 100 km SW of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.9 (ml), micro
Local time: Sun, Apr 19, 2020, 8:52 PM HADT
UTC: 2020-04-20 05:52:37 UTC
Depth: 72.1 km (44.8 mi), intermediate-depth
Epicenter: 51.839° N, 174.973° 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 7.8 km horizontally, 17.1 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 214°, poorly surrounded by stations
Stations used: 23

Nearby

Within 100 km, magnitude 1.5 and up: 130 in the 60 days after this one and 69 in the 30 days before it.

After

The first 60 of 130.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us60009dhx (also filed as av70888054, ak02053nxwzb). Read Wed, Sep 30, 2026, 3:50 AM UTC.