Alaska earthquakes

M5.9 earthquake 45 km S of Adak, Alaska

A magnitude 5.9 earthquake struck 45 km S of Adak, Alaska on Thu, Nov 6, 1986, 8:27 AM HAST (18:27 UTC), 33 km (21 mi) below the surface.

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The earthquake

Magnitude
5.9 (mw), moderate
Local time
UTC
1986-11-06 18:27:00 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.469° N, 176.684° 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 2.5 and up: 8 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.864 km SSE of Adak, Alaska · 14565 days ago · 33 km deep · 25 km away
  2. 4.792 km S of Adak, Alaska · 14562 days ago · 33 km deep · 50 km away
  3. 4.5103 km SSE of Adak, Alaska · 14552 days ago · 33 km deep · 68 km away
  4. 4.670 km S of Adak, Alaska · 14539 days ago · 33 km deep · 29 km away
  5. 5.290 km ESE of Adak, Alaska · 14525 days ago · 33 km deep · 91 km away
  6. 5.146 km SSW of Adak, Alaska · 14522 days ago · 33 km deep · 21 km away
  7. 4.687 km SE of Adak, Alaska · 14511 days ago · 33 km deep · 63 km away
  8. 4.969 km SW of Adak, Alaska · 14507 days ago · 33 km deep · 43 km away

Before

  1. 4.868 km SE of Adak, Alaska · 14572 days ago · 33 km deep · 60 km away
  2. 4.7102 km SSE of Adak, Alaska · 14578 days ago · 33 km deep · 70 km away
  3. 5.254 km SSW of Adak, Alaska · 14578 days ago · 33 km deep · 14 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002zrc (also filed as gcmtb110686c, ushis4006, gcmt19861106182700, iscgem480016). Read Tue, Sep 22, 2026, 8:27 PM UTC.