Alaska earthquakes

M3.5 earthquake 238 km SE of Chiniak, Alaska

A magnitude 3.5 earthquake struck 238 km SE of Chiniak, Alaska on Wed, Feb 28, 2024, 3:07 PM AKST (00:07 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.3 241 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: 3.5 (ml), minor
Local time: Wed, Feb 28, 2024, 3:07 PM AKST
UTC: 2024-02-29 00:07:03 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.035° N, 149.635° 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 7.6 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.06
Depth from: Operator assigned
Station coverage gap: 197°, poorly surrounded by stations
Stations used: 63

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 17 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000mfqf (also filed as ak0242r8acbf). Read Mon, Sep 28, 2026, 10:18 AM UTC.