Alaska earthquakes

M2.5 earthquake 254 km ESE of Chiniak, Alaska

A magnitude 2.5 earthquake struck 254 km ESE of Chiniak, Alaska on Sat, Apr 14, 2018, 2:18 AM AKDT (10:18 UTC), 20 km (12 mi) below the surface.

A larger quake followed: M5.5 276 km ESE 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: Sat, Apr 14, 2018, 2:18 AM AKDT
UTC: 2018-04-14 10:18:48 UTC
Depth: 19.9 km (12.4 mi), shallow
Epicenter: 56.475° N, 148.641° 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 9.8 km horizontally, 10.3 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 235°, poorly surrounded by stations
Stations used: 27

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

After

The first 60 of at least 200.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000dnqb (also filed as ak0184s5yecb, ak19244190). Read Sat, Sep 26, 2026, 2:19 AM UTC.