Alaska earthquakes

M2.4 earthquake 270 km SE of Chiniak, Alaska

A magnitude 2.4 earthquake struck 270 km SE of Chiniak, Alaska on Tue, Mar 16, 2021, 1:29 AM AKDT (09:29 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.1 259 km SE of Chiniak, Alaska. This one was a foreshock.

Kodiak forecast More in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 2.4 (ml), micro
Local time: Tue, Mar 16, 2021, 1:29 AM AKDT
UTC: 2021-03-16 09:29:51 UTC
Depth: 7.8 km (4.8 mi), shallow
Epicenter: 55.774° N, 149.404° 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 10.2 km horizontally, 9.4 km in depth
Magnitude uncertainty: ±0.09
Depth from: From location
Station coverage gap: 255°, poorly surrounded by stations
Stations used: 20

Nearest places

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

Kodiak, AlaskaPopulation 6,253. Forecast289 kmSE

Nearby

Within 100 km, magnitude 1.5 and up: 39 in the 60 days after this one and 15 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000e05w (also filed as ak0213g6u9hr). Read Thu, Sep 24, 2026, 10:19 AM UTC.