Alaska earthquakes

M2.9 earthquake 126 km WSW of Adak, Alaska

A magnitude 2.9 earthquake struck 126 km WSW of Adak, Alaska on Sun, Feb 16, 2020, 9:02 PM HAST (07:02 UTC), 28 km (17 mi) below the surface.

A larger quake followed: M5.3 216 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.9 (ml), micro
Local time: Sun, Feb 16, 2020, 9:02 PM HAST
UTC: 2020-02-17 07:02:40 UTC
Depth: 27.9 km (17.3 mi), shallow
Epicenter: 51.306° N, 178.211° 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 4.4 km horizontally, 12.0 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 225°, poorly surrounded by stations
Stations used: 28

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 199.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us600088a9 (also filed as ak02027hz7d8). Read Wed, Sep 30, 2026, 1:07 PM UTC.