Alaska earthquakes

M2.4 earthquake 178 km W of Adak, Alaska

A magnitude 2.4 earthquake struck 178 km W of Adak, Alaska on Fri, Oct 16, 2020, 3:44 PM HADT (00:44 UTC), 93 km (58 mi) below the surface.

A larger quake followed: M4.9 182 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
2.4 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2020-10-17 00:44:12 UTC
Depth
92.7 km (57.6 mi), intermediate-depth
Epicenter
51.696° N, 179.208° 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
20

Nearby

Within 100 km, magnitude 1.5 and up: 105 in the 60 days after this one and 79 in the 30 days before it.

After

The first 60 of 105.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak020dd9ng8b. Read Mon, Oct 5, 2026, 2:36 PM UTC.