Alaska earthquakes

M2.7 earthquake 82 km W of Adak, Alaska

A magnitude 2.7 earthquake struck 82 km W of Adak, Alaska on Sun, Apr 5, 2020, 10:47 PM HADT (07:47 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.9 64 km S of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.7 (ml), micro
Local time: Sun, Apr 5, 2020, 10:47 PM HADT
UTC: 2020-04-06 07:47:37 UTC
Depth: 7.7 km (4.8 mi), shallow
Epicenter: 51.781° N, 177.825° 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 1.9 km horizontally, 2.3 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 148°
Stations used: 36

Nearby

Within 100 km, magnitude 1.5 and up: 171 in the 60 days after this one and 110 in the 30 days before it.

After

The first 60 of 171.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70008ra8 (also filed as av62153686, ak0204gjkuo4). Read Wed, Sep 30, 2026, 5:18 AM UTC.