Alaska earthquakes

M2.4 earthquake 233 km SE of Chiniak, Alaska

A magnitude 2.4 earthquake struck 233 km SE of Chiniak, Alaska on Tue, Sep 18, 2018, 12:18 PM AKDT (20:18 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M2.8 251 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, Sep 18, 2018, 12:18 PM AKDT
UTC: 2018-09-18 20:18:10 UTC
Depth: 11.6 km (7.2 mi), shallow
Epicenter: 56.245° N, 149.369° 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: 29

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 ak018bzza4oc (also filed as aacse018bzza4oc). Read Mon, Sep 21, 2026, 11:34 PM UTC.