Alaska earthquakes

M2.5 earthquake 215 km SE of Chiniak, Alaska

A magnitude 2.5 earthquake struck 215 km SE of Chiniak, Alaska on Mon, Jun 28, 2021, 4:59 AM AKDT (12:59 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.6 259 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: 2.5 (ml), micro
Local time: Mon, Jun 28, 2021, 4:59 AM AKDT
UTC: 2021-06-28 12:59:57 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.155° N, 149.945° 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 5.5 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.06
Depth from: Operator assigned
Station coverage gap: 235°, poorly surrounded by stations
Stations used: 22

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 40 in the 60 days after this one and 15 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000f745 (also filed as ak021888p370). Read Thu, Sep 24, 2026, 2:56 AM UTC.