Alaska earthquakes

M1.8 earthquake 240 km WSW of Adak, Alaska

A magnitude 1.8 earthquake struck 240 km WSW of Adak, Alaska on Wed, Aug 3, 2016, 11:52 AM GMT-12 (23:52 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M5.6 269 km W 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
UTC
2016-08-03 23:52:19 UTC
Depth
5.1 km (3.2 mi), shallow
Epicenter
50.994° N, 179.797° 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
11

Nearby

Within 100 km, magnitude 1.5 and up: 94 in the 60 days after this one and 59 in the 30 days before it.

After

The first 60 of 94.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0169xm34b1 (also filed as ak13829434). Read Sun, Oct 4, 2026, 5:56 AM UTC.