Alaska earthquakes

M2.8 earthquake 82 km E of Adak, Alaska

A magnitude 2.8 earthquake struck 82 km E of Adak, Alaska on Thu, Jul 22, 2021, 12:02 PM HADT (21:02 UTC), 68 km (42 mi) below the surface.

A larger quake followed: M3.9 111 km SSW of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude
2.8 (ml), micro
Local time
UTC
2021-07-22 21:02:00 UTC
Depth
67.8 km (42.1 mi), shallow
Epicenter
51.881° N, 175.429° 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
43

Nearby

Within 100 km, magnitude 1.5 and up: 178 in the 60 days after this one and 92 in the 30 days before it.

After

The first 60 of 178.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0219c2lzft. Read Thu, Sep 24, 2026, 3:40 PM UTC.