Alaska earthquakes

M3.2 earthquake 181 km E of Atka, Alaska

A magnitude 3.2 earthquake struck 181 km E of Atka, Alaska on Fri, Jul 24, 2020, 10:49 AM HADT (19:49 UTC), 118 km (73 mi) below the surface.

A larger quake followed: M4.0 107 km SW of Nikolski, Alaska. This one was a foreshock.

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

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The earthquake

Magnitude: 3.2 (ml), minor
Local time: Fri, Jul 24, 2020, 10:49 AM HADT
UTC: 2020-07-24 19:49:00 UTC
Depth: 117.8 km (73.2 mi), intermediate-depth
Epicenter: 52.477° N, 171.571° 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 5.6 km horizontally, 12.9 km in depth
Magnitude uncertainty: ±0.09
Depth from: From location
Station coverage gap: 186°, poorly surrounded by stations
Stations used: 26

Nearby

Within 100 km, magnitude 1.5 and up: 24 in the 60 days after this one and 11 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000b91m (also filed as ak0209h0b8bz). Read Tue, Sep 29, 2026, 2:48 PM UTC.