Alaska earthquakes

M4.1 earthquake 30 km W of Karluk, Alaska

A magnitude 4.1 earthquake struck 30 km W of Karluk, Alaska on Thu, Apr 27, 2017, 9:10 AM AKDT (17:10 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M5.0 39 km W of Karluk, Alaska. This one was a foreshock.

Womens Bay 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: 4.1 (ML, local (Richter)), light
Magnitude from: Alaska Earthquake Center
Local time: Thu, Apr 27, 2017, 9:10 AM AKDT
UTC: 2017-04-27 17:10:32 UTC
Depth: 10.8 km (6.7 mi), shallow
Epicenter: 57.529° N, 154.960° 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
4.4	mb, body-wave	USGS National Earthquake Information Center	Reviewed · ±0.155 · 12 stations

What happened

The USGS’s account of the effects of this earthquake.

Felt at Larsen Bay.

From the USGS event page for ak0175ds26py. U.S. Geological Survey text and figures are in the public domain.

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: 103

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 131 in the 60 days after this one and 56 in the 30 days before it.

After

The first 60 of 131.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0175ds26py (also filed as ak15822793, us10008lc6). Read Sun, Oct 4, 2026, 1:10 AM UTC.