Alaska earthquakes

M2.7 earthquake 237 km SE of Chiniak, Alaska

A magnitude 2.7 earthquake struck 237 km SE of Chiniak, Alaska on Wed, Jul 4, 2018, 12:41 PM AKDT (20:41 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: 2.7 (ml), micro
Local time: Wed, Jul 4, 2018, 12:41 PM AKDT
UTC: 2018-07-04 20:41:48 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 55.934° N, 149.885° 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 6.1 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.06
Depth from: Operator assigned
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 us2000g1pa (also filed as ak19855338, ak0188iakrs7, aacse0188iakrs7). Read Sun, Sep 27, 2026, 4:25 AM UTC.