Alaska earthquakes

M3.8 earthquake 189 km S of Adak, Alaska

A magnitude 3.8 earthquake struck 189 km S of Adak, Alaska on Mon, Jun 22, 2020, 1:42 PM HADT (22:42 UTC), 10 km (6 mi) below the surface.

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The earthquake

Magnitude: 3.8 (mb), minor
Local time: Mon, Jun 22, 2020, 1:42 PM HADT
UTC: 2020-06-22 22:42:50 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 50.185° N, 176.967° 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 4.8 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.08
Depth from: Operator assigned
Station coverage gap: 217°, poorly surrounded by stations
Stations used: 77

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 2 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 us7000acbn (also filed as ak020804v15c). Read Tue, Sep 29, 2026, 5:59 PM UTC.