Alaska earthquakes

M2.3 earthquake 44 km ESE of Port Alsworth, Alaska

A magnitude 2.3 earthquake struck 44 km ESE of Port Alsworth, Alaska on Tue, Aug 11, 2020, 5:26 PM AKDT (01:26 UTC), 150 km (93 mi) below the surface.

A larger quake followed: M3.9 38 km WNW of Nanwalek, Alaska. This one was a foreshock.

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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: Tue, Aug 11, 2020, 5:26 PM AKDT
UTC: 2020-08-12 01:26:57 UTC
Depth: 150.1 km (93.3 mi), intermediate-depth
Epicenter: 60.107° N, 153.546° 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: 66

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 199 in the 60 days after this one and 122 in the 30 days before it.

After

The first 60 of at least 199.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak020ac4o7p5. Read Fri, Oct 2, 2026, 3:17 AM UTC.