Alaska earthquakes

M4.8 earthquake 88 km SW of Atka, Alaska

A magnitude 4.8 earthquake struck 88 km SW of Atka, Alaska on Thu, Aug 14, 1986, 5:28 AM HADT (14:28 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.0 110 km SSW of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude
4.8 (mb), light
Local time
UTC
1986-08-14 14:28:52 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.676° N, 175.180° 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 1.8 and up: 11 in the 60 days after this one and 28 in the 30 days before it.

After

  1. 4.237 km E of Adak, Alaska · 14645 days ago · 33 km deep · 66 km away
  2. 4.364 km ESE of Adak, Alaska · 14642 days ago · 33 km deep · 39 km away
  3. 4.488 km SW of Atka, Alaska · 14631 days ago · 33 km deep · 1 km away
  4. 4.1108 km SE of Adak, Alaska · 14605 days ago · 33 km deep · 46 km away
  5. 4.199 km SW of Atka, Alaska · 14604 days ago · 33 km deep · 16 km away
  6. 5.0110 km SSW of Atka, Alaska · 14603 days ago · 33 km deep · 42 km away
  7. 5.445 km ESE of Adak, Alaska · 14601 days ago · 33 km deep · 57 km away
  8. 4.977 km SSE of Adak, Alaska · 14598 days ago · 33 km deep · 81 km away
  9. 5.225 km E of Adak, Alaska · 14597 days ago · 43 km deep · 77 km away
  10. 4.579 km SE of Adak, Alaska · 14596 days ago · 33 km deep · 51 km away
  11. 4.767 km SE of Adak, Alaska · 14595 days ago · 33 km deep · 50 km away

Before

  1. 4.3Andreanof Islands, Aleutian Islands, Alaska · 14654 days ago · 33 km deep · 49 km away
  2. 5.087 km S of Atka, Alaska · 14661 days ago · 33 km deep · 76 km away
  3. 4.795 km SSW of Atka, Alaska · 14661 days ago · 33 km deep · 42 km away
  4. 5.076 km SE of Adak, Alaska · 14662 days ago · 33 km deep · 69 km away
  5. 4.571 km S of Atka, Alaska · 14662 days ago · 33 km deep · 72 km away
  6. 4.354 km SSE of Adak, Alaska · 14662 days ago · 33 km deep · 80 km away
  7. 4.986 km S of Atka, Alaska · 14662 days ago · 33 km deep · 73 km away
  8. 4.889 km S of Atka, Alaska · 14662 days ago · 33 km deep · 72 km away
  9. 5.492 km S of Atka, Alaska · 14662 days ago · 33 km deep · 71 km away
  10. 4.986 km SSE of Adak, Alaska · 14662 days ago · 33 km deep · 88 km away
  11. 4.883 km SSE of Adak, Alaska · 14662 days ago · 33 km deep · 90 km away
  12. 4.4Andreanof Islands, Aleutian Islands, Alaska · 14666 days ago · 33 km deep · 26 km away
  13. 4.785 km SW of Atka, Alaska · 14666 days ago · 33 km deep · 8 km away
  14. 5.588 km WSW of Atka, Alaska · 14666 days ago · 33 km deep · 14 km away
  15. 4.844 km E of Adak, Alaska · 14667 days ago · 33 km deep · 60 km away
  16. 5.4Andreanof Islands, Aleutian Islands, Alaska · 14667 days ago · 33 km deep · 75 km away
  17. 4.497 km SSE of Adak, Alaska · 14668 days ago · 33 km deep · 96 km away
  18. 4.793 km SSE of Adak, Alaska · 14669 days ago · 33 km deep · 77 km away
  19. 4.669 km ESE of Adak, Alaska · 14669 days ago · 33 km deep · 33 km away
  20. 5.683 km SSE of Adak, Alaska · 14670 days ago · 33 km deep · 78 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002x50. Read Tue, Sep 22, 2026, 8:45 PM UTC.