Alaska earthquakes

M2.6 earthquake 139 km WSW of Nikolski, Alaska

A magnitude 2.6 earthquake struck 139 km WSW of Nikolski, Alaska on Tue, Sep 7, 2021, 3:08 PM HADT (00:08 UTC), 88 km (55 mi) below the surface.

A larger quake followed: M5.2 185 km SW of Nikolski, Alaska. This one was a foreshock.

Map

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

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The earthquake

Magnitude: 2.6 (ml), micro
Local time: Tue, Sep 7, 2021, 3:08 PM HADT
UTC: 2021-09-08 00:08:17 UTC
Depth: 88.3 km (54.9 mi), intermediate-depth
Epicenter: 52.645° N, 170.873° 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 13.9 km horizontally, 9.8 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 186°, poorly surrounded by stations
Stations used: 15

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 23 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 us6000frkq (also filed as ak021bj3xv5o). Read Mon, Sep 28, 2026, 2:54 AM UTC.