Alaska earthquakes

M2.3 earthquake 55 km ENE of Port Alsworth, Alaska

A magnitude 2.3 earthquake struck 55 km ENE of Port Alsworth, Alaska on Mon, Mar 15, 2021, 11:06 AM AKDT (19:06 UTC), 160 km (100 mi) below the surface.

A larger quake followed: M4.2 41 km E of Pedro Bay, Alaska. This one was a foreshock.

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Map

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

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The earthquake

Magnitude: 2.3 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Mon, Mar 15, 2021, 11:06 AM AKDT
UTC: 2021-03-15 19:06:50 UTC
Depth: 160.2 km (99.5 mi), intermediate-depth
Epicenter: 60.345° N, 153.354° 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.

Stations used: 120

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 201.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0213ep4b85. Read Sun, Oct 4, 2026, 12:12 PM UTC.