Alaska earthquakes

M3.9 earthquake 212 km WSW of Adak, Alaska

A magnitude 3.9 earthquake struck 212 km WSW of Adak, Alaska on Sun, Oct 16, 2022, 5:44 AM HADT (14:44 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.7 Andreanof Islands, Aleutian Islands, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 3.9 (mb), minor
Local time: Sun, Oct 16, 2022, 5:44 AM HADT
UTC: 2022-10-16 14:44:06 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 50.860° N, 179.213° 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 4.6 km horizontally, 1.9 km in depth
Magnitude uncertainty: ±0.15
Depth from: Operator assigned
Station coverage gap: 223°, poorly surrounded by stations
Stations used: 37

Nearby

Within 100 km, magnitude 1.5 and up: 107 in the 60 days after this one and 43 in the 30 days before it.

After

The first 60 of 107.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000ivaf (also filed as ak022da6wtfb). Read Wed, Sep 30, 2026, 5:11 AM UTC.