Alaska earthquakes

M1.8 earthquake 57 km S of Adak, Alaska

A magnitude 1.8 earthquake struck 57 km S of Adak, Alaska on Sat, Mar 3, 2018, 2:06 AM HAST (12:06 UTC), 23 km (14 mi) below the surface.

A larger quake followed: M4.6 111 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
UTC
2018-03-03 12:06:54 UTC
Depth
23.2 km (14.4 mi), shallow
Epicenter
51.365° N, 176.516° 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: 109 in the 60 days after this one and 68 in the 30 days before it.

After

The first 60 of 109.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0182uqi4ce (also filed as ak18655350). Read Fri, Oct 2, 2026, 2:36 AM UTC.