Alaska earthquakes

M3.0 earthquake 59 km SW of Karluk, Alaska

A magnitude 3.0 earthquake struck 59 km SW of Karluk, Alaska on Mon, Jul 23, 2018, 3:32 AM AKDT (11:32 UTC), 54 km (34 mi) below the surface.

A larger quake followed: M4.2 72 km WSW of Karluk, 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: 3.0 (ML, local (Richter)), minor
Magnitude from: Alaska Earthquake Center
Local time: Mon, Jul 23, 2018, 3:32 AM AKDT
UTC: 2018-07-23 11:32:09 UTC
Depth: 54.3 km (33.7 mi), shallow
Epicenter: 57.245° N, 155.240° 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)	AACSE	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: 102

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 98 in the 60 days after this one and 37 in the 30 days before it.

After

The first 60 of 98.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0189dkdg11 (also filed as ak19960377, us2000gbrt, aacse0189dkdg11). Read Fri, Oct 2, 2026, 3:05 AM UTC.