Alaska earthquakes

M2.7 earthquake 53 km E of Adak, Alaska

A magnitude 2.7 earthquake struck 53 km E of Adak, Alaska on Thu, Jun 18, 2020, 9:47 AM HADT (18:47 UTC), 129 km (80 mi) below the surface.

A larger quake followed: M3.8 61 km ESE of Adak, Alaska. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 2.7 (ml), micro
Local time: Thu, Jun 18, 2020, 9:47 AM HADT
UTC: 2020-06-18 18:47:01 UTC
Depth: 128.9 km (80.1 mi), intermediate-depth
Epicenter: 51.919° N, 175.861° 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 11.3 km horizontally, 3.5 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 187°, poorly surrounded by stations
Stations used: 24

Nearby

Within 100 km, magnitude 1.5 and up: 152 in the 60 days after this one and 75 in the 30 days before it.

After

The first 60 of 152.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000afa7 (also filed as ak0207tgcvo2). Read Wed, Sep 30, 2026, 12:58 AM UTC.