Alaska earthquakes

M2.7 earthquake 224 km SE of Old Harbor, Alaska

A magnitude 2.7 earthquake struck 224 km SE of Old Harbor, Alaska on Mon, Jan 1, 2018, 12:31 AM AKST (09:31 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M5.0 261 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: 2.7 (ml), micro
Local time: Mon, Jan 1, 2018, 12:31 AM AKST
UTC: 2018-01-01 09:31:38 UTC
Depth: 4.5 km (2.8 mi), shallow
Epicenter: 55.620° N, 151.043° W
Region: Alaska
Tsunami flag: No
Status: Reviewed by a seismologist

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 9.4 km horizontally, 9.5 km in depth
Magnitude uncertainty: ±0.09
Depth from: From location
Station coverage gap: 275°, poorly surrounded by stations
Stations used: 17

Nearest places

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

Womens Bay, AlaskaPopulation 719. Forecast250 kmSSE

Nearby

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of at least 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000c1l2 (also filed as ak17964361, ak0181t2zcq). Read Tue, Sep 29, 2026, 3:35 AM UTC.