Alaska earthquakes

M4.3 earthquake 64 km S of Adak, Alaska

A magnitude 4.3 earthquake struck 64 km S of Adak, Alaska on Fri, Aug 16, 1996, 7:51 PM HADT (04:51 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.5 95 km SW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 4.3 (mb), light
Local time: Fri, Aug 16, 1996, 7:51 PM HADT
UTC: 1996-08-17 04:51:39 UTC
Depth: 33.0 km (20.5 mi), shallow
Epicenter: 51.291° N, 176.607° 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: 13 in the 60 days after this one and 6 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 usp0007npq (also filed as ak996akgakrj). Read Tue, Sep 22, 2026, 9:40 PM UTC.