Alaska earthquakes

M2.5 earthquake 259 km W of Adak, Alaska

A magnitude 2.5 earthquake struck 259 km W of Adak, Alaska on Fri, Dec 9, 2016, 6:05 AM GMT+12 (18:05 UTC), 75 km (46 mi) below the surface.

A larger quake followed: M5.1 222 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.5 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Fri, Dec 9, 2016, 6:05 AM GMT+12
UTC: 2016-12-08 18:05:46 UTC
Depth: 74.8 km (46.5 mi), intermediate-depth
Epicenter: 51.502° N, 179.668° E
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: 56 in the 60 days after this one and 65 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak016frk30gf (also filed as ak14721557). Read Sat, Oct 3, 2026, 10:53 AM UTC.