Alaska earthquakes

M3.2 earthquake 163 km SSE of Atka, Alaska

A magnitude 3.2 earthquake struck 163 km SSE of Atka, Alaska on Mon, Jul 26, 2021, 12:39 PM HADT (21:39 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.8 181 km SSE of Atka, Alaska. This one was a foreshock.

Map

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The earthquake

Magnitude: 3.2 (ml), minor
Local time: Mon, Jul 26, 2021, 12:39 PM HADT
UTC: 2021-07-26 21:39:09 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 50.839° N, 173.291° 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 9.1 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.10
Depth from: Operator assigned
Station coverage gap: 311°, poorly surrounded by stations
Stations used: 23

Nearby

Within 100 km, magnitude 1.5 and up: 57 in the 60 days after this one and 13 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 us6000ezc9 (also filed as ak0219ioyoyu). Read Thu, Sep 24, 2026, 10:21 AM UTC.