Alaska earthquakes

M3.2 earthquake 239 km ESE of Chiniak, Alaska

A magnitude 3.2 earthquake struck 239 km ESE of Chiniak, Alaska on Fri, Sep 25, 2020, 8:57 AM AKDT (16:57 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M4.8 Gulf of 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, Sep 25, 2020, 8:57 AM AKDT
UTC: 2020-09-25 16:57:05 UTC
Depth: 22.1 km (13.7 mi), shallow
Epicenter: 56.495° N, 148.911° 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 9.1 km horizontally, 11.3 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 235°, poorly surrounded by stations
Stations used: 28

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 24 in the 60 days after this one and 13 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000c4zq (also filed as ak020cd5fiz6). Read Sun, Sep 27, 2026, 12:34 AM UTC.