Alaska earthquakes

M5.6 earthquake 192 km SE of Attu Station, Alaska

A magnitude 5.6 earthquake struck 192 km SE of Attu Station, Alaska on Thu, Sep 2, 1965, 4:26 PM GMT+12 (04:26 UTC), 31 km (19 mi) below the surface.

A larger quake followed: M5.6 199 km SE of Attu Station, Alaska. This one was a foreshock.

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The earthquake

Magnitude
5.6 (mw), moderate
Local time
UTC
1965-09-02 04:26:39 UTC
Depth
30.7 km (19.1 mi), shallow
Epicenter
51.844° N, 175.494° E
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.

Magnitude uncertainty
±0.20
Depth from
From location

Nearby

Within 100 km, magnitude 2.5 and up: 2 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 5.6199 km SE of Attu Station, Alaska · 22275 days ago · 35 km deep · 10 km away
  2. 6.093 km SE of Attu Station, Alaska · 22253 days ago · 39 km deep · 100 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem853538 (also filed as ushis2840). Read Tue, Sep 22, 2026, 11:20 AM UTC.