Alaska earthquakes

M1.6 earthquake 34 km SW of Adak, Alaska

A magnitude 1.6 earthquake struck 34 km SW of Adak, Alaska on Sat, Dec 11, 2021, 7:17 AM HAST (17:17 UTC), 69 km (43 mi) below the surface.

A larger quake followed: M2.5 70 km ESE of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.6 (ml), micro
Local time
UTC
2021-12-11 17:17:48 UTC
Depth
68.5 km (42.6 mi), shallow
Epicenter
51.619° N, 176.914° 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
16

Nearby

Within 100 km, magnitude 1.5 and up: 195 in the 60 days after this one and 4 in the 30 days before it.

After

The first 60 of 195.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021fuumulg. Read Thu, Sep 24, 2026, 5:40 AM UTC.