Alaska earthquakes

M1.8 earthquake 109 km SW of Adak, Alaska

A magnitude 1.8 earthquake struck 109 km SW of Adak, Alaska on Fri, Apr 22, 2016, 12:16 PM HADT (21:16 UTC), 24 km (15 mi) below the surface.

A larger quake followed: M5.1 39 km SW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 1.8 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Fri, Apr 22, 2016, 12:16 PM HADT
UTC: 2016-04-22 21:16:58 UTC
Depth: 23.8 km (14.8 mi), shallow
Epicenter: 51.284° N, 177.898° 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: 182 in the 60 days after this one and 90 in the 30 days before it.

After

The first 60 of 182.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak016578bvg0 (also filed as ak13502839). Read Sun, Oct 4, 2026, 12:44 PM UTC.