Alaska earthquakes

M2.4 earthquake 237 km SE of Chiniak, Alaska

A magnitude 2.4 earthquake struck 237 km SE of Chiniak, Alaska on Tue, Jul 31, 2018, 1:40 AM AKDT (09:40 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.6 262 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: 2.4 (ml), micro
Local time: Tue, Jul 31, 2018, 1:40 AM AKDT
UTC: 2018-07-31 09:40:36 UTC
Depth: 5.1 km (3.2 mi), shallow
Epicenter: 56.078° N, 149.573° 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.

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: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0189qrj4kh (also filed as ak20016633, aacse0189qrj4kh). Read Tue, Sep 22, 2026, 8:26 AM UTC.