Alaska earthquakes

M2.3 earthquake 71 km SE of Adak, Alaska

A magnitude 2.3 earthquake struck 71 km SE of Adak, Alaska on Mon, Dec 16, 2019, 12:58 PM HAST (22:58 UTC), 27 km (17 mi) below the surface.

A larger quake followed: M5.0 119 km SSW of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude
2.3 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2019-12-16 22:58:03 UTC
Depth
26.7 km (16.6 mi), shallow
Epicenter
51.397° N, 175.952° 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
32

Nearby

Within 100 km, magnitude 1.5 and up: 164 in the 60 days after this one and 183 in the 30 days before it.

After

The first 60 of 164.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak019g37jfqa. Read Thu, Oct 1, 2026, 4:20 AM UTC.