Alaska earthquakes

M3.7 earthquake 345 km W of Adak, Alaska

A magnitude 3.7 earthquake struck 345 km W of Adak, Alaska on Sat, Aug 13, 2022, 6:02 AM GMT+12 (18:02 UTC), 102 km (63 mi) below the surface.

A larger quake followed: M5.2 Rat Islands, Aleutian Islands, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 3.7 (mb), minor
Local time: Sat, Aug 13, 2022, 6:02 AM GMT+12
UTC: 2022-08-12 18:02:17 UTC
Depth: 102.0 km (63.4 mi), intermediate-depth
Epicenter: 51.770° N, 178.378° E
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 9.8 km horizontally, 5.0 km in depth
Magnitude uncertainty: ±0.09
Depth from: From location
Station coverage gap: 97°
Stations used: 60

Nearby

Within 100 km, magnitude 1.5 and up: 96 in the 60 days after this one and 49 in the 30 days before it.

After

The first 60 of 96.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000iac1 (also filed as ak022aar40o4). Read Wed, Sep 30, 2026, 12:16 AM UTC.