Alaska earthquakes

M4.5 earthquake 46 km SSW of Atka, Alaska

A magnitude 4.5 earthquake struck 46 km SSW of Atka, Alaska on Sun, Nov 8, 1981, 11:36 AM GMT-11 (22:36 UTC), 33 km (21 mi) below the surface.

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The earthquake

Magnitude
4.5 (mb), light
Local time
UTC
1981-11-08 22:36:23 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.795° N, 174.408° 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 2 in the 30 days before it.

After

  1. 4.351 km SSW of Atka, Alaska · 16381 days ago · 33 km deep · 6 km away

Before

  1. 4.751 km S of Atka, Alaska · 16389 days ago · 33 km deep · 11 km away
  2. 4.778 km ESE of Atka, Alaska · 16404 days ago · 41 km deep · 81 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001gvr. Read Tue, Sep 22, 2026, 5:18 AM UTC.