Alaska earthquakes

M2.9 earthquake 259 km W of Adak, Alaska

A magnitude 2.9 earthquake struck 259 km W of Adak, Alaska on Wed, Sep 16, 2020, 11:12 AM GMT+12 (23:12 UTC), 189 km (117 mi) below the surface.

A larger quake followed: M4.2 Rat Islands, Aleutian Islands, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.9 (ml), micro
Local time: Wed, Sep 16, 2020, 11:12 AM GMT+12
UTC: 2020-09-15 23:12:44 UTC
Depth: 189.0 km (117.4 mi), intermediate-depth
Epicenter: 51.939° N, 179.593° E
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 15.4 km horizontally, 6.1 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 95°
Stations used: 36

Nearby

Within 100 km, magnitude 1.5 and up: 98 in the 60 days after this one and 62 in the 30 days before it.

After

The first 60 of 98.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000c1fl (also filed as ak020bwpyiux). Read Mon, Sep 28, 2026, 5:47 AM UTC.