Alaska earthquakes

M1.8 earthquake 70 km SSE of Adak, Alaska

A magnitude 1.8 earthquake struck 70 km SSE of Adak, Alaska on Wed, Apr 5, 2017, 7:24 AM HADT (16:24 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M5.9 95 km SSW 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: Wed, Apr 5, 2017, 7:24 AM HADT
UTC: 2017-04-05 16:24:04 UTC
Depth: 20.8 km (12.9 mi), shallow
Epicenter: 51.265° N, 176.344° 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: 14

Nearby

Within 100 km, magnitude 1.5 and up: 191 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of 191.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0174ddq24n (also filed as ak15725993). Read Fri, Oct 2, 2026, 11:45 PM UTC.