Alaska earthquakes

M3.0 earthquake 60 km W of Nanwalek, Alaska

A magnitude 3.0 earthquake struck 60 km W of Nanwalek, Alaska on Sat, Apr 28, 2018, 11:56 AM AKDT (19:56 UTC), 89 km (55 mi) below the surface.

A larger quake followed: M3.4 56 km WNW of Ninilchik, 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: 3.0 (ML, local (Richter)), minor
Magnitude from: Alaska Earthquake Center
Local time: Sat, Apr 28, 2018, 11:56 AM AKDT
UTC: 2018-04-28 19:56:31 UTC
Depth: 88.8 km (55.2 mi), intermediate-depth
Epicenter: 59.438° N, 152.979° 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
3.0	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
3.0	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed

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: 142

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 ak0185fh29a5 (also filed as ak19293279, us1000du27). Read Mon, Oct 5, 2026, 3:20 AM UTC.