Alaska earthquakes

M2.5 earthquake 249 km ESE of Chiniak, Alaska

A magnitude 2.5 earthquake struck 249 km ESE of Chiniak, Alaska on Sun, Apr 25, 2021, 10:26 AM AKDT (18:26 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M3.0 246 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: 2.5 (ml), micro
Local time: Sun, Apr 25, 2021, 10:26 AM AKDT
UTC: 2021-04-25 18:26:22 UTC
Depth: 21.2 km (13.2 mi), shallow
Epicenter: 56.544° N, 148.654° 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 7.6 km horizontally, 11.0 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 233°, poorly surrounded by stations
Stations used: 25

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 36 in the 60 days after this one and 19 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000e4qn (also filed as ak0215ahois2). Read Thu, Sep 24, 2026, 7:04 AM UTC.