Alaska earthquakes

M5.6 earthquake 77 km SSE of Cordova, Alaska

A magnitude 5.6 earthquake struck 77 km SSE of Cordova, Alaska on Thu, Apr 9, 1964, 3:06 AM GMT-10 (13:06 UTC), 17 km (11 mi) below the surface.

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The earthquake

Magnitude: 5.6 (mw), moderate
Local time: Thu, Apr 9, 1964, 3:06 AM GMT-10
UTC: 1964-04-09 13:06:20 UTC
Depth: 17.1 km (10.6 mi), shallow
Epicenter: 59.901° N, 145.221° 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.

Magnitude uncertainty: ±0.20
Depth from: From location

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 2.5 and up: 6 in the 60 days after this one and 14 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem868557 (also filed as ushis2686). Read Tue, Sep 22, 2026, 12:14 PM UTC.