Alaska earthquakes

M2.8 earthquake 235 km ESE of Chiniak, Alaska

A magnitude 2.8 earthquake struck 235 km ESE of Chiniak, Alaska on Tue, Jul 17, 2018, 6:32 AM AKDT (14:32 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.7 283 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: 2.8 (ml), micro
Local time: Tue, Jul 17, 2018, 6:32 AM AKDT
UTC: 2018-07-17 14:32:20 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.527° N, 148.952° 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 8.0 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.05
Depth from: Operator assigned
Station coverage gap: 210°, poorly surrounded by stations
Stations used: 48

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 us2000ga16 (also filed as ak01893oxp0j, ak19921558, aacse01893oxp0j). Read Sun, Sep 27, 2026, 7:51 AM UTC.