Alaska earthquakes

M2.0 earthquake 8 km NNW of Harding-Birch Lakes, Alaska

A magnitude 2.0 earthquake struck 8 km NNW of Harding-Birch Lakes, Alaska on Tue, Sep 14, 2021, 10:08 AM AKDT (18:08 UTC), 2 km (1 mi) below the surface.

Automatic solution: the magnitude and location may still be revised.

A larger quake followed: M4.1 31 km SW of Salcha, Alaska. This one was a foreshock.

Salcha 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: 2.0 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Tue, Sep 14, 2021, 10:08 AM AKDT
UTC: 2021-09-14 18:08:27 UTC
Depth: 2.1 km (1.3 mi), shallow
Epicenter: 64.436° N, 146.696° W
Region: Alaska
Felt reports: 2
Tsunami flag: No
Status: Automatic solution, may be revised

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
2.0	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
2.2	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.031 · 138 stations

Did you feel it?

2 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

How well it is located

An automatic solution; a seismologist may revise it.

Stations used: 27

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 37 in the 60 days after this one and 17 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 ak021btbvrnf (also filed as us7000fb4x). Read Thu, Oct 1, 2026, 4:25 PM UTC.