Alaska earthquakes

M1.8 earthquake 129 km WSW of Adak, Alaska

A magnitude 1.8 earthquake struck 129 km WSW of Adak, Alaska on Wed, Oct 28, 2020, 6:31 AM HADT (15:31 UTC), 35 km (22 mi) below the surface.

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

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The earthquake

Magnitude
1.8 (ml), micro
Local time
UTC
2020-10-28 15:31:30 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
51.282° N, 178.245° 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
22

Nearby

Within 100 km, magnitude 1.5 and up: 131 in the 60 days after this one and 76 in the 30 days before it.

After

The first 60 of 131.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak020dvpf0rt. Read Sun, Sep 27, 2026, 3:06 PM UTC.