Alaska earthquakes

M2.4 earthquake 257 km W of Adak, Alaska

A magnitude 2.4 earthquake struck 257 km W of Adak, Alaska on Sun, Aug 13, 2017, 5:50 AM GMT+12 (17:50 UTC), 56 km (35 mi) below the surface.

A larger quake followed: M4.8 Rat Islands, Aleutian Islands, 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: Sun, Aug 13, 2017, 5:50 AM GMT+12
UTC: 2017-08-12 17:50:34 UTC
Depth: 55.9 km (34.7 mi), shallow
Epicenter: 51.493° N, 179.692° E
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: 21

Nearby

Within 100 km, magnitude 1.5 and up: 104 in the 60 days after this one and 80 in the 30 days before it.

After

The first 60 of 104.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017aaqswde (also filed as ak16506155). Read Sat, Oct 3, 2026, 11:44 AM UTC.