Alaska earthquakes

M3.2 earthquake 200 km SE of Chiniak, Alaska

A magnitude 3.2 earthquake struck 200 km SE of Chiniak, Alaska on Fri, Mar 16, 2018, 6:22 PM AKDT (02:22 UTC), 33 km (20 mi) below the surface.

A larger quake followed: M5.5 276 km ESE 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: 3.2 (ml), minor
Local time: Fri, Mar 16, 2018, 6:22 PM AKDT
UTC: 2018-03-17 02:22:18 UTC
Depth: 32.8 km (20.4 mi), shallow
Epicenter: 56.303° N, 150.020° 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 5.1 km horizontally, 11.0 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 187°, poorly surrounded by stations
Stations used: 68

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 201 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 201.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000d8fk (also filed as ak18701518, ak0183hq6010). Read Thu, Sep 24, 2026, 3:40 PM UTC.