Alaska earthquakes

M2.9 earthquake 197 km SSE of Old Harbor, Alaska

A magnitude 2.9 earthquake struck 197 km SSE of Old Harbor, Alaska on Thu, Jan 25, 2018, 7:31 AM AKST (16:31 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M4.8 218 km SE of Chiniak, Alaska. This one was a foreshock.

Womens Bay 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: 2.9 (ML, local (Richter)), micro
Magnitude from: USGS National Earthquake Information Center
Local time: Thu, Jan 25, 2018, 7:31 AM AKST
UTC: 2018-01-25 16:31:41 UTC
Depth: 6.3 km (3.9 mi), shallow
Epicenter: 55.680° N, 151.657° 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
2.9	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.077 · 22 stations
3.0	ML, local (Richter)	Alaska Earthquake Center	Preliminary

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 3.4 km horizontally, 8.6 km in depth
Magnitude uncertainty: ±0.08
Depth from: From location
Station coverage gap: 237°, poorly surrounded by stations
Stations used: 66

Nearest places

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

Womens Bay, AlaskaPopulation 719. Forecast231 kmSSE

Nearby

Within 100 km, magnitude 1.5 and up: 126 in the 60 days after this one and 40 in the 30 days before it.

After

The first 60 of 126.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000ci21 (also filed as ak18387680, ak01815m5co6). Read Thu, Oct 1, 2026, 9:20 AM UTC.