Alaska earthquakes

M4.1 earthquake 20 km S of King Salmon, Alaska

A magnitude 4.1 earthquake struck 20 km S of King Salmon, Alaska on Mon, May 30, 2016, 5:42 PM AKDT (01:42 UTC), 201 km (125 mi) below the surface.

A larger quake followed: M5.5 26 km SSE of King Salmon, 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: 4.1 (ML, local (Richter)), light
Magnitude from: Alaska Earthquake Center
Local time: Mon, May 30, 2016, 5:42 PM AKDT
UTC: 2016-05-31 01:42:25 UTC
Depth: 200.8 km (124.8 mi), intermediate-depth
Epicenter: 58.502° N, 156.709° W
Region: Alaska
Tsunami flag: No
Status: Reviewed by a seismologist

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
4.1	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
4.3	mb, body-wave	USGS National Earthquake Information Center	Reviewed · ±0.079 · 46 stations

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: 149

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 23 in the 60 days after this one and 16 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 ak0166zej8py (also filed as ak13615347, us20005zac). Read Mon, Oct 5, 2026, 12:53 PM UTC.