Alaska earthquakes

M3.7 earthquake 87 km SSE of Akutan, Alaska

A magnitude 3.7 earthquake struck 87 km SSE of Akutan, Alaska on Sun, Feb 23, 2020, 10:29 AM AKST (19:29 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M4.8 35 km SE of Unalaska, Alaska. This one was a foreshock.

Akutan 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: 3.7 (mb), minor
Local time: Sun, Feb 23, 2020, 10:29 AM AKST
UTC: 2020-02-23 19:29:22 UTC
Depth: 35.0 km (21.7 mi), shallow
Epicenter: 53.410° N, 165.276° 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 5.8 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.25
Depth from: Operator assigned
Station coverage gap: 239°, poorly surrounded by stations
Stations used: 37

Nearest places

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

Akutan, AlaskaPopulation 1,040. Forecast87 kmSSE

Nearby

Within 100 km, magnitude 1.5 and up: 49 in the 60 days after this one and 26 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 us60008fvp (also filed as ak0202hmi8p6). Read Tue, Sep 29, 2026, 9:50 PM UTC.