Alaska earthquakes

M3.4 earthquake 198 km S of Adak, Alaska

A magnitude 3.4 earthquake struck 198 km S of Adak, Alaska on Mon, Jul 29, 1996, 12:51 AM HADT (09:51 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.0 190 km S of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
3.4 (mb), minor
Local time
UTC
1996-07-29 09:51:20 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
50.094° N, 176.395° 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: 1 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 4.0190 km S of Adak, Alaska · 10995 days ago · 33 km deep · 9 km away

Before

  1. 4.0182 km SSE of Adak, Alaska · 11027 days ago · 33 km deep · 53 km away
  2. 3.8101 km S of Adak, Alaska · 11035 days ago · 33 km deep · 97 km away
  3. 3.8101 km S of Adak, Alaska · 11040 days ago · 33 km deep · 100 km away
  4. 4.0187 km S of Adak, Alaska · 11044 days ago · 33 km deep · 27 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0007mtn. Read Wed, Sep 30, 2026, 10:41 AM UTC.