Alaska earthquakes

M2.1 earthquake 90 km SW of Atka, Alaska

A magnitude 2.1 earthquake struck 90 km SW of Atka, Alaska on Sat, Jul 24, 2021, 12:02 PM HADT (21:02 UTC), 42 km (26 mi) below the surface.

A larger quake followed: M2.2 91 km ESE of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
2.1 (ml), micro
Local time
UTC
2021-07-24 21:02:35 UTC
Depth
41.6 km (25.8 mi), shallow
Epicenter
51.654° N, 175.190° 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
25

Nearby

Within 100 km, magnitude 1.5 and up: 166 in the 60 days after this one and 33 in the 30 days before it.

After

The first 60 of 166.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0219fdor30. Read Thu, Sep 24, 2026, 9:54 AM UTC.