Alaska earthquakes

M2.8 earthquake 68 km ESE of Atka, Alaska

A magnitude 2.8 earthquake struck 68 km ESE of Atka, Alaska on Tue, May 19, 2020, 7:26 PM HADT (04:26 UTC), 61 km (38 mi) below the surface.

A larger quake followed: M4.1 19 km SSE of Atka, Alaska. This one was a foreshock.

Map

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

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The earthquake

Magnitude: 2.8 (ml), micro
Local time: Tue, May 19, 2020, 7:26 PM HADT
UTC: 2020-05-20 04:26:13 UTC
Depth: 61.3 km (38.1 mi), shallow
Epicenter: 51.861° N, 173.357° 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 12.5 km horizontally, 24.3 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 209°, poorly surrounded by stations
Stations used: 18

Nearby

Within 100 km, magnitude 1.5 and up: 89 in the 60 days after this one and 25 in the 30 days before it.

After

The first 60 of 89.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000a449 (also filed as ak0206h9b9nl). Read Tue, Sep 29, 2026, 10:26 PM UTC.