Alaska earthquakes

M3.2 earthquake 108 km NNE of Atka, Alaska

A magnitude 3.2 earthquake struck 108 km NNE of Atka, Alaska on Tue, Dec 16, 2025, 11:42 PM HAST (09:42 UTC), 209 km (130 mi) below the surface.

A larger quake followed: M4.0 78 km N of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 3.2 (ML, local (Richter)), minor
Magnitude from: USGS National Earthquake Information Center
Local time: Tue, Dec 16, 2025, 11:42 PM HAST
UTC: 2025-12-17 09:42:32 UTC
Depth: 208.7 km (129.7 mi), intermediate-depth
Epicenter: 53.023° N, 173.353° 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
3.2	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.097 · 14 stations
3.2	ML, local (Richter)	Alaska Earthquake Center	Reviewed · ±0.5 · 19 stations

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 17.7 km horizontally, 15.9 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 172°
Stations used: 32

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 0 in the 30 days before it.

After

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000s8v3 (also filed as ak2025ytfmct). Read Sun, Oct 4, 2026, 12:13 AM UTC.