Alaska earthquakes

M2.7 earthquake 75 km NNE of Adak, Alaska

A magnitude 2.7 earthquake struck 75 km NNE of Adak, Alaska on Fri, Oct 2, 2020, 4:20 PM HADT (01:20 UTC), 203 km (126 mi) below the surface.

A larger quake followed: M3.9 63 km ESE of Adak, Alaska. This one was a foreshock.

Map

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The earthquake

Magnitude: 2.7 (ml), micro
Local time: Fri, Oct 2, 2020, 4:20 PM HADT
UTC: 2020-10-03 01:20:23 UTC
Depth: 203.1 km (126.2 mi), intermediate-depth
Epicenter: 52.516° N, 176.284° 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.

Location uncertainty: About 15.7 km horizontally, 12.4 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 107°
Stations used: 33

Nearby

Within 100 km, magnitude 1.5 and up: 36 in the 60 days after this one and 23 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 us6000c7dj (also filed as ak020cq4kwmg). Read Mon, Sep 28, 2026, 3:37 AM UTC.