Alaska earthquakes

M2.7 earthquake 189 km W of Adak, Alaska

A magnitude 2.7 earthquake struck 189 km W of Adak, Alaska on Fri, Oct 23, 2020, 8:27 PM HADT (05:27 UTC), 96 km (60 mi) below the surface.

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

Map

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The earthquake

Magnitude: 2.7 (ml), micro
Local time: Fri, Oct 23, 2020, 8:27 PM HADT
UTC: 2020-10-24 05:27:28 UTC
Depth: 96.3 km (59.8 mi), intermediate-depth
Epicenter: 51.594° N, 179.344° 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 7.5 km horizontally, 5.5 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 159°
Stations used: 30

Nearby

Within 100 km, magnitude 1.5 and up: 94 in the 60 days after this one and 70 in the 30 days before it.

After

The first 60 of 94.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000c8if (also filed as ak020doxafpf). Read Sun, Sep 27, 2026, 6:51 AM UTC.