Alaska earthquakes

M5.5 earthquake 48 km S of Adak, Alaska

A magnitude 5.5 earthquake struck 48 km S of Adak, Alaska on Sun, Oct 3, 1982, 9:46 PM GMT-10 (07:46 UTC), 38 km (23 mi) below the surface.

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The earthquake

Magnitude
5.5 (mb), moderate
Local time
UTC
1982-10-04 07:46:52 UTC
Depth
37.8 km (23.5 mi), shallow
Epicenter
51.435° N, 176.620° 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 2.5 and up: 2 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 4.253 km W of Adak, AK · 16048 days ago · 89 km deep · 73 km away
  2. 4.259 km SE of Adak, Alaska · 16003 days ago · 61 km deep · 51 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001q0r (also filed as gcmtb100482a, ushis3765, gcmt19821004074653, iscgem589958). Read Tue, Sep 22, 2026, 8:09 AM UTC.