Alaska earthquakes

M2.8 earthquake 240 km SE of Chiniak, Alaska

A magnitude 2.8 earthquake struck 240 km SE of Chiniak, Alaska on Wed, Oct 24, 2018, 6:22 AM AKDT (14:22 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M2.9 251 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: 2.8 (ml), micro
Local time: Wed, Oct 24, 2018, 6:22 AM AKDT
UTC: 2018-10-24 14:22:37 UTC
Depth: 7.0 km (4.4 mi), shallow
Epicenter: 55.893° N, 149.910° 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 9.4 km horizontally, 8.7 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 222°, poorly surrounded by stations
Stations used: 40

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 189 in the 60 days after this one and 10 in the 30 days before it.

After

The first 60 of 189.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000i4za (also filed as ak018dnf2xvb, ak20307299, aacse018dnf2xvb). Read Wed, Sep 23, 2026, 8:23 AM UTC.