Alaska earthquakes

M3.2 earthquake 157 km SW of Adak, Alaska

A magnitude 3.2 earthquake struck 157 km SW of Adak, Alaska on Thu, Oct 14, 2021, 4:17 AM HADT (13:17 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.1 194 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 3.2 (ml), minor
Local time: Thu, Oct 14, 2021, 4:17 AM HADT
UTC: 2021-10-14 13:17:24 UTC
Depth: 33.2 km (20.6 mi), shallow
Epicenter: 50.788° N, 178.093° 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 3.8 km horizontally, 6.7 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 257°, poorly surrounded by stations
Stations used: 22

Nearby

Within 100 km, magnitude 1.5 and up: 100 in the 60 days after this one and 67 in the 30 days before it.

After

The first 60 of 100.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000g9u8 (also filed as ak021d6v2xmi). Read Thu, Sep 24, 2026, 8:32 AM UTC.