Alaska earthquakes

M2.8 earthquake 50 km W of Adak, Alaska

A magnitude 2.8 earthquake struck 50 km W of Adak, Alaska on Wed, Jul 15, 2020, 12:24 AM HADT (09:24 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M4.6 125 km W of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.8 (ml), micro
Local time: Wed, Jul 15, 2020, 12:24 AM HADT
UTC: 2020-07-15 09:24:04 UTC
Depth: 18.3 km (11.3 mi), shallow
Epicenter: 51.824° N, 177.359° 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 2.7 km horizontally, 3.1 km in depth
Magnitude uncertainty: ±0.15
Depth from: From location
Station coverage gap: 132°
Stations used: 29

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 111 in the 30 days before it.

After

The first 60 of at least 199.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000ants (also filed as av62198066, ak02091ydf97). Read Wed, Sep 30, 2026, 11:43 AM UTC.