Alaska earthquakes

M3.8 earthquake 49 km ESE of Adak, Alaska

A magnitude 3.8 earthquake struck 49 km ESE of Adak, Alaska on Sun, Jul 10, 2022, 9:36 AM HADT (18:36 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M4.7 21 km SSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 3.8 (ml), minor
Local time: Sun, Jul 10, 2022, 9:36 AM HADT
UTC: 2022-07-10 18:36:49 UTC
Depth: 35.0 km (21.7 mi), shallow
Epicenter: 51.746° N, 175.949° 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 3.7 km horizontally, 1.9 km in depth
Magnitude uncertainty: ±0.11
Depth from: Operator assigned
Station coverage gap: 200°, poorly surrounded by stations
Stations used: 26

Nearby

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and 136 in the 30 days before it.

After

The first 60 of at least 200.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000i35f (also filed as ak0228s6kwlr). Read Wed, Sep 30, 2026, 4:29 AM UTC.