Alaska earthquakes

M3.1 earthquake 209 km ESE of Chiniak, Alaska

A magnitude 3.1 earthquake struck 209 km ESE of Chiniak, Alaska on Tue, Feb 13, 2018, 9:21 PM AKST (06:21 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M5.4 252 km ESE of Chiniak, 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: 3.1 (ML, local (Richter)), minor
Magnitude from: Alaska Earthquake Center
Local time: Tue, Feb 13, 2018, 9:21 PM AKST
UTC: 2018-02-14 06:21:41 UTC
Depth: 9.1 km (5.7 mi), shallow
Epicenter: 56.729° N, 149.215° 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
3.1	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
3.4	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.043 · 72 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: 87

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 202 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 202.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak01822ivt44 (also filed as ak18435942, us2000d1vm). Read Thu, Oct 1, 2026, 4:37 AM UTC.