Alaska earthquakes

M2.4 earthquake 79 km E of Adak, Alaska

A magnitude 2.4 earthquake struck 79 km E of Adak, Alaska on Mon, Dec 4, 2017, 2:40 PM HAST (00:40 UTC), 59 km (37 mi) below the surface.

A larger quake followed: M4.9 82 km SW of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.4 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Mon, Dec 4, 2017, 2:40 PM HAST
UTC: 2017-12-05 00:40:08 UTC
Depth: 59.4 km (36.9 mi), shallow
Epicenter: 51.754° N, 175.494° 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.

Stations used: 17

Nearby

Within 100 km, magnitude 1.5 and up: 164 in the 60 days after this one and 63 in the 30 days before it.

After

The first 60 of 164.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017fknf8ox (also filed as ak17464371). Read Thu, Oct 1, 2026, 11:41 PM UTC.