Alaska earthquakes

M2.1 earthquake 9 km ENE of Adak, Alaska

A magnitude 2.1 earthquake struck 9 km ENE of Adak, Alaska on Fri, Aug 24, 2018, 7:55 PM HADT (04:55 UTC), 74 km (46 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: 2.1 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Fri, Aug 24, 2018, 7:55 PM HADT
UTC: 2018-08-25 04:55:47 UTC
Depth: 73.7 km (45.8 mi), intermediate-depth
Epicenter: 51.908° N, 176.514° 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: 21

Nearby

Within 100 km, magnitude 1.5 and up: 181 in the 60 days after this one and 81 in the 30 days before it.

After

The first 60 of 181.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak018aw12vim (also filed as ak20192718). Read Fri, Oct 2, 2026, 12:01 AM UTC.