Alaska earthquakes

M2.3 earthquake 65 km E of Port Alsworth, Alaska

A magnitude 2.3 earthquake struck 65 km E of Port Alsworth, Alaska on Sat, May 8, 2021, 3:45 AM AKDT (11:45 UTC), 137 km (85 mi) below the surface.

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

A larger quake followed: M4.3 25 km W of Salamatof, Alaska. This one was a foreshock.

Ninilchik 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: 2.3 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Sat, May 8, 2021, 3:45 AM AKDT
UTC: 2021-05-08 11:45:00 UTC
Depth: 137.4 km (85.4 mi), intermediate-depth
Epicenter: 60.237° N, 153.144° W
Region: Alaska
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
2.3	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
3.0	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.034 · 112 stations

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

An automatic solution; a seismologist may revise it.

Stations used: 88

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 200 in the 60 days after this one and 156 in the 30 days before it.

After

The first 60 of at least 200.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0215vvlu38 (also filed as us7000e1bj). Read Fri, Oct 2, 2026, 11:46 PM UTC.