Alaska earthquakes

M4.7 earthquake 102 km SSE of Adak, Alaska

A magnitude 4.7 earthquake struck 102 km SSE of Adak, Alaska on Fri, Oct 24, 1986, 5:51 PM HADT (02:51 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.8 68 km SE of Adak, Alaska. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
4.7 (mb), light
Local time
UTC
1986-10-25 02:51:43 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.073° N, 175.908° 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 1.7 and up: 10 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 4.868 km SE of Adak, Alaska · 14572 days ago · 33 km deep · 50 km away
  2. 4.7174 km SSE of Adak, Alaska · 14566 days ago · 33 km deep · 73 km away
  3. 5.945 km S of Adak, Alaska · 14565 days ago · 33 km deep · 70 km away
  4. 4.864 km SSE of Adak, Alaska · 14565 days ago · 33 km deep · 45 km away
  5. 4.792 km S of Adak, Alaska · 14562 days ago · 33 km deep · 34 km away
  6. 4.991 km SSW of Atka, Alaska · 14560 days ago · 33 km deep · 89 km away
  7. 4.5103 km SSE of Adak, Alaska · 14552 days ago · 33 km deep · 8 km away
  8. 4.670 km S of Adak, Alaska · 14539 days ago · 33 km deep · 43 km away
  9. 5.290 km ESE of Adak, Alaska · 14525 days ago · 33 km deep · 72 km away
  10. 5.146 km SSW of Adak, Alaska · 14522 days ago · 33 km deep · 89 km away

Before

  1. 5.254 km SSW of Adak, Alaska · 14578 days ago · 33 km deep · 76 km away
  2. 4.8120 km SSW of Atka, Alaska · 14582 days ago · 33 km deep · 83 km away
  3. 4.697 km SSW of Atka, Alaska · 14583 days ago · 33 km deep · 88 km away
  4. 4.4136 km SE of Adak, Alaska · 14585 days ago · 33 km deep · 46 km away
  5. 5.690 km SW of Atka, Alaska · 14585 days ago · 33 km deep · 85 km away
  6. 4.4178 km S of Adak, Alaska · 14595 days ago · 33 km deep · 95 km away
  7. 4.767 km SE of Adak, Alaska · 14595 days ago · 33 km deep · 49 km away
  8. 4.579 km SE of Adak, Alaska · 14596 days ago · 33 km deep · 37 km away
  9. 5.225 km E of Adak, Alaska · 14597 days ago · 43 km deep · 91 km away
  10. 4.977 km SSE of Adak, Alaska · 14598 days ago · 33 km deep · 25 km away
  11. 5.445 km ESE of Adak, Alaska · 14601 days ago · 33 km deep · 77 km away
  12. 5.0110 km SSW of Atka, Alaska · 14603 days ago · 33 km deep · 71 km away
  13. 4.199 km SW of Atka, Alaska · 14604 days ago · 33 km deep · 72 km away
  14. 4.1108 km SE of Adak, Alaska · 14605 days ago · 33 km deep · 43 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002zaw. Read Tue, Sep 22, 2026, 8:51 PM UTC.