Alaska earthquakes

M6.0 earthquake 86 km W of Attu Station, Alaska

A magnitude 6.0 earthquake struck 86 km W of Attu Station, Alaska on Wed, Feb 10, 1965, 4:37 AM GMT+11 (17:37 UTC), 30 km (19 mi) below the surface.

A larger quake followed: M6.3 128 km W of Attu Station, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 6.0 (mw), strong
Local time: Wed, Feb 10, 1965, 4:37 AM GMT+11
UTC: 1965-02-09 17:37:17 UTC
Depth: 30.0 km (18.6 mi), shallow
Epicenter: 52.815° N, 171.904° 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: ±0.43
Depth from: From location

Nearby

Within 100 km, magnitude 2.5 and up: 6 in the 60 days after this one and 8 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem859942 (also filed as ushis2779). Read Tue, Sep 22, 2026, 11:21 AM UTC.