Alaska earthquakes

M3.1 earthquake 258 km W of Adak, Alaska

A magnitude 3.1 earthquake struck 258 km W of Adak, Alaska on Wed, Sep 9, 2026, 2:14 AM GMT+12 (14:14 UTC), 168 km (104 mi) below the surface.

A larger quake followed: M4.2 286 km W of Adak, Alaska. This one was a foreshock.

Map

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The earthquake

Magnitude: 3.1 (ML, local (Richter)), minor
Magnitude from: USGS National Earthquake Information Center
Local time: Wed, Sep 9, 2026, 2:14 AM GMT+12
UTC: 2026-09-08 14:14:14 UTC
Depth: 168.2 km (104.5 mi), intermediate-depth
Epicenter: 52.267° N, 179.656° E
Region: Alaska
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
3.1	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Confirmed · ±0.077 · 22 stations
2.7	ML, local (Richter)	Alaska Earthquake Center	Reviewed · ±0.3 · 19 stations

Did you feel it?

No one has reported feeling this quake to the USGS. If you felt it, tell the USGS: every report sharpens the shaking map.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 8.7 km horizontally, 10.3 km in depth
Magnitude uncertainty: ±0.08
Depth from: From location
Station coverage gap: 168°
Stations used: 24

Nearby

Within 100 km, magnitude 1.5 and up: 27 since this one and 25 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 us7000tj2h (also filed as aka2026ruvynx). Read Sat, Oct 3, 2026, 3:53 PM UTC.