Alaska earthquakes

M5.2 earthquake 64 km E of Nikolski, Alaska

A magnitude 5.2 earthquake struck 64 km E of Nikolski, Alaska on Mon, Dec 14, 2015, 12:12 PM AKST (21:12 UTC), 47 km (29 mi) below the surface.

Unalaska 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: 5.2 (mb, body-wave), moderate
Magnitude from: USGS National Earthquake Information Center
Local time: Mon, Dec 14, 2015, 12:12 PM AKST
UTC: 2015-12-14 21:12:01 UTC
Depth: 46.7 km (29.0 mi), shallow
Epicenter: 52.835° N, 167.924° 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
5.2	mb, body-wave	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.027 · 444 stations
5.24	Mw, moment	ISC-GEM global catalog	Final · ±0.1
5.2	mb, body-wave	Alaska Earthquake Center	Preliminary

What happened

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

Felt at Nikolski.

From the USGS event page for us20004h58. 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.

Location uncertainty: About 3.1 km horizontally, 5.1 km in depth
Magnitude uncertainty: ±0.03
Depth from: From location
Station coverage gap: 123°
Stations used: 159

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast148 kmSW

Nearby

Within 100 km, magnitude 2.2 and up: 43 in the 60 days after this one and 21 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us20004h58 (also filed as ak12280141, ak015fzvlg76, gcmt20151214211201, iscgem608108997). Read Mon, Oct 5, 2026, 3:40 AM UTC.