Alaska earthquakes

M3.0 earthquake 272 km SE of Chiniak, Alaska

A magnitude 3.0 earthquake struck 272 km SE of Chiniak, Alaska on Fri, Mar 6, 2020, 8:31 PM AKST (05:31 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.2 250 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: 3.0 (ml), minor
Local time: Fri, Mar 6, 2020, 8:31 PM AKST
UTC: 2020-03-07 05:31:54 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.298° N, 148.503° 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 7.9 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.05
Depth from: Operator assigned
Station coverage gap: 229°, poorly surrounded by stations
Stations used: 60

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 49 in the 60 days after this one and 21 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70008jh1 (also filed as ak02032w66t3). Read Wed, Sep 30, 2026, 7:32 PM UTC.