Alaska earthquakes

M2.7 earthquake 230 km SE of Chiniak, Alaska

A magnitude 2.7 earthquake struck 230 km SE of Chiniak, Alaska on Sat, Mar 10, 2018, 8:26 AM AKST (17:26 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M5.2 228 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: Sat, Mar 10, 2018, 8:26 AM AKST
UTC: 2018-03-10 17:26:15 UTC
Depth: 4.3 km (2.7 mi), shallow
Epicenter: 55.934° N, 150.065° 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 9.7 km horizontally, 8.6 km in depth
Magnitude uncertainty: ±0.08
Depth from: From location
Station coverage gap: 219°, poorly surrounded by stations
Stations used: 43

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

After

The first 60 of at least 202.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000d4je (also filed as ak18696763, ak01836ecxi1). Read Mon, Sep 28, 2026, 5:44 AM UTC.