Alaska earthquakes

M4.2 earthquake 173 km W of Adak, Alaska

A magnitude 4.2 earthquake struck 173 km W of Adak, Alaska on Thu, Jun 20, 1996, 5:41 AM HADT (14:41 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.5 113 km WNW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
4.2 (mb), light
Local time
UTC
1996-06-20 14:41:13 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.982° N, 179.149° 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.

Stations used
0

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 33 in the 30 days before it.

After

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak9967wp0krv. Read Tue, Sep 22, 2026, 8:25 PM UTC.