Alaska earthquakes

M3.9 earthquake 97 km S of Adak, Alaska

A magnitude 3.9 earthquake struck 97 km S of Adak, Alaska on Mon, Jul 8, 1996, 1:03 PM HADT (22:03 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.2 101 km SW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 3.9 (mb), minor
Local time: Mon, Jul 8, 1996, 1:03 PM HADT
UTC: 1996-07-08 22:03:33 UTC
Depth: 33.0 km (20.5 mi), shallow
Epicenter: 51.007° N, 176.841° 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: 32 in the 60 days after this one and at least 200 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0007kva (also filed as ak9968ql86vr). Read Wed, Sep 30, 2026, 10:34 PM UTC.