Alaska earthquakes

M2.4 earthquake 104 km ESE of Adak, Alaska

A magnitude 2.4 earthquake struck 104 km ESE of Adak, Alaska on Sun, Aug 12, 2018, 10:59 PM HADT (07:59 UTC), 31 km (19 mi) below the surface.

A larger quake followed: M4.7 91 km SSE of Adak, 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 12, 2018, 10:59 PM HADT
UTC: 2018-08-13 07:59:53 UTC
Depth: 30.8 km (19.1 mi), shallow
Epicenter: 51.512° N, 175.244° 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: 16

Nearby

Within 100 km, magnitude 1.5 and up: 145 in the 60 days after this one and 54 in the 30 days before it.

After

The first 60 of 145.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak018ac8fvr2 (also filed as ak20253127). Read Fri, Oct 2, 2026, 11:16 AM UTC.