Alaska earthquakes

M2.1 earthquake 78 km W of Karluk, Alaska

A magnitude 2.1 earthquake struck 78 km W of Karluk, Alaska on Sun, Sep 20, 2026, 3:31 PM AKDT (23:31 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.7 37 km SW of Karluk, Alaska. This one was a foreshock.

Naknek forecast More in Alaska

Map

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

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The earthquake

Magnitude: 2.1 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Sun, Sep 20, 2026, 3:31 PM AKDT
UTC: 2026-09-20 23:31:39 UTC
Depth: 5.3 km (3.3 mi), shallow
Epicenter: 57.667° N, 155.761° 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
2.1	ML, local (Richter)	Alaska Earthquake Center	Preferred · Reviewed · ±0.2 · 17 stations
1.44	ML, local (Richter)	AV	Final · ±0.416359724237613 · 18 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 3.4 km horizontally, 2.4 km in depth
Magnitude uncertainty: ±0.20
Station coverage gap: 122°
Stations used: 28

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 57 since this one and 108 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 aka2026srsuwu (also filed as av94440851). Read Sun, Oct 4, 2026, 8:09 PM UTC.