Alaska earthquakes

M2.3 earthquake 19 km ENE of Chase, Alaska

A magnitude 2.3 earthquake struck 19 km ENE of Chase, Alaska on Fri, Apr 20, 2018, 4:09 PM AKDT (00:09 UTC), 63 km (39 mi) below the surface.

A larger quake followed: M4.0 62 km ENE of Chase, 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: 2.3 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Fri, Apr 20, 2018, 4:09 PM AKDT
UTC: 2018-04-21 00:09:22 UTC
Depth: 63.2 km (39.3 mi), shallow
Epicenter: 62.545° N, 149.789° 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
2.3	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
2.3	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: 109

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 199 in the 60 days after this one and 116 in the 30 days before it.

After

The first 60 of at least 199.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak01853kphyp (also filed as ak19247148, us1000dpnr). Read Sun, Oct 4, 2026, 4:50 AM UTC.