Alaska earthquakes

M1.8 earthquake 91 km ESE of Adak, Alaska

A magnitude 1.8 earthquake struck 91 km ESE of Adak, Alaska on Thu, Dec 12, 2019, 11:51 PM HAST (09:51 UTC), 29 km (18 mi) below the surface.

A larger quake followed: M4.7 87 km SW of Atka, 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
2019-12-13 09:51:53 UTC
Depth
29.4 km (18.3 mi), shallow
Epicenter
51.483° N, 175.479° 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: 140 in the 60 days after this one and 186 in the 30 days before it.

After

The first 60 of 140.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak019fy15df9. Read Thu, Oct 1, 2026, 5:50 AM UTC.