Alaska earthquakes

M4.3 earthquake 101 km S of Adak, Alaska

A magnitude 4.3 earthquake struck 101 km S of Adak, Alaska on Sun, Jun 23, 1996, 7:09 PM HADT (04:09 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.6 44 km SSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 4.3 (mb), light
Local time: Sun, Jun 23, 1996, 7:09 PM HADT
UTC: 1996-06-24 04:09:33 UTC
Depth: 33.0 km (20.5 mi), shallow
Epicenter: 50.974° N, 176.372° 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: 29 in the 60 days after this one and 170 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0007k6s (also filed as ak9968350tcu). Read Tue, Sep 22, 2026, 9:38 PM UTC.