Alaska earthquakes

M2.7 earthquake 44 km NNW of Atka, Alaska

A magnitude 2.7 earthquake struck 44 km NNW of Atka, Alaska on Sun, Sep 20, 2026, 7:46 AM HADT (16:46 UTC), 196 km (122 mi) below the surface.

A larger quake followed: M3.3 25 km E of Atka, Alaska. This one was a foreshock.

Map

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

Open the live map with earthquakes

The earthquake

Magnitude: 2.7 (ML, local (Richter)), micro
Magnitude from: USGS National Earthquake Information Center
Local time: Sun, Sep 20, 2026, 7:46 AM HADT
UTC: 2026-09-20 16:46:18 UTC
Depth: 196.0 km (121.8 mi), intermediate-depth
Epicenter: 52.541° N, 174.538° W
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
2.7	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Preliminary · ±0.105 · 12 stations
2.7	ML, local (Richter)	Alaska Earthquake Center	Reviewed · ±0.3 · 9 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 14.3 km horizontally, 9.2 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 121°
Stations used: 14

Nearby

Within 100 km, magnitude 1.5 and up: 7 since this one and 22 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 us6000txnu (also filed as aka2026srfhoq). Read Thu, Oct 1, 2026, 1:30 PM UTC.