Alaska earthquakes

M4.2 earthquake 107 km SW of Adak, Alaska

A magnitude 4.2 earthquake struck 107 km SW of Adak, Alaska on Fri, Jun 21, 1996, 12:35 AM HADT (09:35 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M6.0 Andreanof Islands, Aleutian Islands, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 4.2 (mb), light
Local time: Fri, Jun 21, 1996, 12:35 AM HADT
UTC: 1996-06-21 09:35:42 UTC
Depth: 33.0 km (20.5 mi), shallow
Epicenter: 51.198° N, 177.735° 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.

Depth from: OPERATOR_ASSIGNED

Nearby

Within 100 km, magnitude 1.5 and up: 46 in the 60 days after this one and at least 200 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0007k2f (also filed as ak9967y9jj7x). Read Mon, Sep 28, 2026, 1:03 PM UTC.