Alaska earthquakes

M2.6 earthquake 149 km SW of Adak, Alaska

A magnitude 2.6 earthquake struck 149 km SW of Adak, Alaska on Mon, Feb 3, 2020, 10:02 PM HAST (08:02 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.3 216 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.6 (ml), micro
Local time: Mon, Feb 3, 2020, 10:02 PM HAST
UTC: 2020-02-04 08:02:51 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 51.039° N, 178.312° 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 3.2 km horizontally, 2.0 km in depth
Depth from: Operator assigned
Station coverage gap: 220°, poorly surrounded by stations
Stations used: 26

Nearby

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 200.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70007plj (also filed as ak0201m0l5rx). Read Wed, Sep 30, 2026, 11:34 AM UTC.