Alaska earthquakes

M3.3 earthquake 64 km SSW of Atka, Alaska

A magnitude 3.3 earthquake struck 64 km SSW of Atka, Alaska on Fri, Jun 26, 2020, 6:37 AM HADT (15:37 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M3.9 30 km ESE 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: 3.3 (ml), minor
Local time: Fri, Jun 26, 2020, 6:37 AM HADT
UTC: 2020-06-26 15:37:18 UTC
Depth: 35.0 km (21.7 mi), shallow
Epicenter: 51.654° N, 174.537° 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 3.7 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.10
Depth from: Operator assigned
Station coverage gap: 206°, poorly surrounded by stations
Stations used: 26

Nearby

Within 100 km, magnitude 1.5 and up: 130 in the 60 days after this one and 61 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 us7000aev3 (also filed as ak02086mt8yy). Read Tue, Sep 29, 2026, 12:00 PM UTC.