Alaska earthquakes

M3.0 earthquake 59 km ESE of Adak, Alaska

A magnitude 3.0 earthquake struck 59 km ESE of Adak, Alaska on Mon, Jul 12, 2021, 3:27 AM HADT (12:27 UTC), 38 km (24 mi) below the surface.

A larger quake followed: M4.1 77 km S of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
3.0 (ml), minor
Local time
UTC
2021-07-12 12:27:49 UTC
Depth
38.1 km (23.7 mi), shallow
Epicenter
51.624° N, 175.879° 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.

Stations used
50

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 56 in the 30 days before it.

After

The first 60 of at least 199.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0218ve12xd. Read Sun, Sep 27, 2026, 5:31 AM UTC.