Alaska earthquakes

M4.7 earthquake 95 km SSW of Atka, Alaska

A magnitude 4.7 earthquake struck 95 km SSW of Atka, Alaska on Sat, Aug 2, 1986, 10:58 AM HADT (19:58 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.4 45 km ESE of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
4.7 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1986-08-02 19:58:16 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.408° N, 174.757° 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: 9 in the 60 days after this one and 25 in the 30 days before it.

After

  1. 5.087 km S of Atka, Alaska · 14673 days ago · 33 km deep · 41 km away
  2. 4.3Andreanof Islands, Aleutian Islands, Alaska · 14667 days ago · 33 km deep · 9 km away
  3. 4.888 km SW of Atka, Alaska · 14662 days ago · 33 km deep · 42 km away
  4. 4.364 km ESE of Adak, Alaska · 14655 days ago · 33 km deep · 75 km away
  5. 4.488 km SW of Atka, Alaska · 14644 days ago · 33 km deep · 41 km away
  6. 4.1108 km SE of Adak, Alaska · 14618 days ago · 33 km deep · 46 km away
  7. 4.199 km SW of Atka, Alaska · 14617 days ago · 33 km deep · 32 km away
  8. 5.0110 km SSW of Atka, Alaska · 14616 days ago · 33 km deep · 17 km away
  9. 5.445 km ESE of Adak, Alaska · 14614 days ago · 33 km deep · 95 km away

Before

  1. 5.076 km SE of Adak, Alaska · 14674 days ago · 33 km deep · 86 km away
  2. 4.571 km S of Atka, Alaska · 14675 days ago · 33 km deep · 45 km away
  3. 4.986 km S of Atka, Alaska · 14675 days ago · 33 km deep · 38 km away
  4. 4.889 km S of Atka, Alaska · 14675 days ago · 33 km deep · 36 km away
  5. 5.492 km S of Atka, Alaska · 14675 days ago · 33 km deep · 33 km away
  6. 4.986 km SSE of Adak, Alaska · 14675 days ago · 33 km deep · 100 km away
  7. 4.4Andreanof Islands, Aleutian Islands, Alaska · 14678 days ago · 33 km deep · 60 km away
  8. 4.785 km SW of Atka, Alaska · 14679 days ago · 33 km deep · 49 km away
  9. 5.588 km WSW of Atka, Alaska · 14679 days ago · 33 km deep · 56 km away
  10. 4.844 km E of Adak, Alaska · 14679 days ago · 33 km deep · 100 km away
  11. 5.4Andreanof Islands, Aleutian Islands, Alaska · 14679 days ago · 33 km deep · 50 km away
  12. 4.793 km SSE of Adak, Alaska · 14682 days ago · 33 km deep · 85 km away
  13. 4.669 km ESE of Adak, Alaska · 14682 days ago · 33 km deep · 73 km away
  14. 5.683 km SSE of Adak, Alaska · 14682 days ago · 33 km deep · 91 km away
  15. 5.876 km SSE of Adak, Alaska · 14682 days ago · 33 km deep · 100 km away
  16. 4.993 km SW of Atka, Alaska · 14683 days ago · 33 km deep · 45 km away
  17. 4.983 km SSE of Adak, Alaska · 14684 days ago · 33 km deep · 100 km away
  18. 5.257 km SSE of Adak, Alaska · 14685 days ago · 33 km deep · 100 km away
  19. 4.879 km SE of Adak, Alaska · 14685 days ago · 33 km deep · 66 km away
  20. 4.631 km SW of Atka, Alaska · 14687 days ago · 33 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002wtz. Read Mon, Oct 5, 2026, 12:47 PM UTC.