Alaska earthquakes

M4.8 earthquake 37 km E of Adak, Alaska

A magnitude 4.8 earthquake struck 37 km E of Adak, Alaska on Sun, Aug 8, 1982, 4:11 AM GMT-10 (14:11 UTC), 68 km (43 mi) below the surface.

A larger quake followed: M5.1 Andreanof Islands, Aleutian Islands, Alaska. This one was a foreshock.

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The earthquake

Magnitude
4.8 (mb), light
Local time
UTC
1982-08-08 14:11:00 UTC
Depth
68.4 km (42.5 mi), shallow
Epicenter
51.848° N, 176.089° 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 1.8 and up: 3 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 4.847 km E of Adak, AK · 16116 days ago · 67 km deep · 9 km away
  2. 5.1Andreanof Islands, Aleutian Islands, Alaska · 16102 days ago · 59 km deep · 52 km away
  3. 5.548 km S of Adak, Alaska · 16060 days ago · 38 km deep · 59 km away

Before

  1. 5.438 km ENE of Adak, Alaska · 16119 days ago · 64 km deep · 11 km away
  2. 4.550 km SE of Adak, Alaska · 16145 days ago · 62 km deep · 27 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001nx2. Read Wed, Sep 23, 2026, 12:55 AM UTC.