Alaska earthquakes

M2.7 earthquake 133 km SW of Adak, Alaska

A magnitude 2.7 earthquake struck 133 km SW of Adak, Alaska on Wed, Jul 12, 2023, 1:12 PM HADT (22:12 UTC), 35 km (22 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: 2.7 (ml), micro
Local time: Wed, Jul 12, 2023, 1:12 PM HADT
UTC: 2023-07-12 22:12:35 UTC
Depth: 35.0 km (21.7 mi), shallow
Epicenter: 51.158° N, 178.175° 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 4.7 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.12
Depth from: Operator assigned
Station coverage gap: 259°, poorly surrounded by stations
Stations used: 11

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and 180 in the 30 days before it.

After

The first 60 of at least 201.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000kh1c (also filed as ak0238vjw60j). Read Wed, Sep 30, 2026, 11:19 PM UTC.