Alaska earthquakes

M2.5 earthquake 220 km SE of Chiniak, Alaska

A magnitude 2.5 earthquake struck 220 km SE of Chiniak, Alaska on Thu, Jan 25, 2018, 4:09 AM AKST (13:09 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M5.3 254 km SE 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: 2.5 (ml), micro
Local time: Thu, Jan 25, 2018, 4:09 AM AKST
UTC: 2018-01-25 13:09:19 UTC
Depth: 22.3 km (13.9 mi), shallow
Epicenter: 56.250° N, 149.657° 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 11.4 km horizontally, 12.5 km in depth
Magnitude uncertainty: ±0.09
Depth from: From location
Station coverage gap: 277°, poorly surrounded by stations
Stations used: 17

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

After

The first 60 of at least 201.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000ci1s (also filed as ak18387660, ak01815k8a7l). Read Tue, Sep 29, 2026, 1:18 AM UTC.