Alaska earthquakes

M2.1 earthquake 122 km WSW of Adak, Alaska

A magnitude 2.1 earthquake struck 122 km WSW of Adak, Alaska on Fri, Nov 20, 2020, 10:05 AM HAST (20:05 UTC), 17 km (10 mi) below the surface.

A larger quake followed: M5.0 124 km SW of Adak, Alaska. This one was a foreshock.

More in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
2.1 (ml), micro
Local time
UTC
2020-11-20 20:05:51 UTC
Depth
16.8 km (10.4 mi), shallow
Epicenter
51.349° N, 178.190° 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
25

Nearby

Within 100 km, magnitude 1.5 and up: 125 in the 60 days after this one and 60 in the 30 days before it.

After

The first 60 of 125.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak020extllxt. Read Sun, Sep 27, 2026, 8:06 AM UTC.