Alaska earthquakes

M2.8 earthquake 261 km ESE of Chiniak, Alaska

A magnitude 2.8 earthquake struck 261 km ESE of Chiniak, Alaska on Tue, Jul 3, 2018, 1:53 PM AKDT (21:53 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.3 270 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 3, 2018, 1:53 PM AKDT
UTC: 2018-07-03 21:53:09 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.562° N, 148.413° 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 4.0 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.06
Depth from: Operator assigned
Station coverage gap: 213°, poorly surrounded by stations
Stations used: 36

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 us2000g0pe (also filed as ak19853536, aacse0188gnpcj9, ak0188gnpcj9). Read Tue, Sep 22, 2026, 1:07 AM UTC.