Alaska earthquakes

M5.0 earthquake 113 km SE of Old Harbor, Alaska

A magnitude 5.0 earthquake struck 113 km SE of Old Harbor, Alaska on Wed, Nov 23, 1983, 9:50 PM GMT-9 (06:50 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.3 103 km SE of Old Harbor, Alaska. This one was a foreshock.

Womens Bay forecastMore in Alaska

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
5.0 (mb), moderate
Local time
UTC
1983-11-24 06:50:33 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
56.386° N, 152.189° 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
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Nearest places

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

Nearby

Within 100 km, magnitude 2.0 and up: 10 in the 60 days after this one and 0 in the 30 days before it.

After

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000200s. Read Tue, Sep 22, 2026, 9:30 PM UTC.