Alaska earthquakes

M4.7 earthquake 78 km ESE of Atka, Alaska

A magnitude 4.7 earthquake struck 78 km ESE of Atka, Alaska on Fri, Oct 23, 1981, 10:11 PM GMT-10 (08:11 UTC), 41 km (26 mi) below the surface.

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The earthquake

Magnitude
4.7 (mb), light
Local time
UTC
1981-10-24 08:11:17 UTC
Depth
41.2 km (25.6 mi), shallow
Epicenter
51.819° N, 173.232° 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.

Nearby

Within 100 km, magnitude 1.7 and up: 4 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 4.751 km S of Atka, Alaska · 16390 days ago · 33 km deep · 73 km away
  2. 4.546 km SSW of Atka, Alaska · 16389 days ago · 33 km deep · 81 km away
  3. 4.351 km SSW of Atka, Alaska · 16382 days ago · 33 km deep · 79 km away
  4. 4.778 km ENE of Atka, Alaska · 16373 days ago · 33 km deep · 78 km away

Before

  1. 3.9126 km SE of Atka, Alaska · 16405 days ago · 33 km deep · 58 km away
  2. 4.643 km ENE of Atka, Alaska · 16420 days ago · 68 km deep · 59 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001gnf. Read Wed, Sep 23, 2026, 4:22 AM UTC.