Alaska earthquakes

M4.8 earthquake 44 km E of Adak, Alaska

A magnitude 4.8 earthquake struck 44 km E of Adak, Alaska on Sun, Jul 27, 1986, 7:54 PM HADT (04:54 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.5 88 km WSW of Atka, Alaska. This one was a foreshock.

More in Alaska

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
4.8 (mb), light
Local time
UTC
1986-07-28 04:54:15 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.871° N, 175.992° 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: 17 in the 60 days after this one and 29 in the 30 days before it.

After

  1. 5.588 km WSW of Atka, Alaska · 14666 days ago · 33 km deep · 49 km away
  2. 4.785 km SW of Atka, Alaska · 14666 days ago · 33 km deep · 56 km away
  3. 4.4Andreanof Islands, Aleutian Islands, Alaska · 14666 days ago · 33 km deep · 62 km away
  4. 4.883 km SSE of Adak, Alaska · 14662 days ago · 33 km deep · 79 km away
  5. 4.986 km SSE of Adak, Alaska · 14662 days ago · 33 km deep · 79 km away
  6. 4.354 km SSE of Adak, Alaska · 14662 days ago · 33 km deep · 51 km away
  7. 5.076 km SE of Adak, Alaska · 14662 days ago · 33 km deep · 62 km away
  8. 4.795 km SSW of Atka, Alaska · 14661 days ago · 33 km deep · 100 km away
  9. 5.979 km S of Adak, Alaska · 14660 days ago · 33 km deep · 96 km away
  10. 4.784 km S of Adak, Alaska · 14660 days ago · 33 km deep · 98 km away
  11. 4.987 km S of Adak, Alaska · 14660 days ago · 33 km deep · 100 km away
  12. 4.780 km S of Adak, Alaska · 14660 days ago · 33 km deep · 94 km away
  13. 4.888 km SW of Atka, Alaska · 14649 days ago · 33 km deep · 60 km away
  14. 4.237 km E of Adak, Alaska · 14645 days ago · 33 km deep · 8 km away
  15. 4.364 km ESE of Adak, Alaska · 14642 days ago · 33 km deep · 26 km away
  16. 4.488 km SW of Atka, Alaska · 14631 days ago · 33 km deep · 61 km away
  17. 4.946 km SW of Adak, Alaska · 14618 days ago · 33 km deep · 83 km away

Before

  1. 4.497 km SSE of Adak, Alaska · 14668 days ago · 33 km deep · 91 km away
  2. 4.793 km SSE of Adak, Alaska · 14669 days ago · 33 km deep · 79 km away
  3. 4.669 km ESE of Adak, Alaska · 14669 days ago · 33 km deep · 27 km away
  4. 5.683 km SSE of Adak, Alaska · 14670 days ago · 33 km deep · 72 km away
  5. 5.876 km SSE of Adak, Alaska · 14670 days ago · 33 km deep · 71 km away
  6. 4.993 km SW of Atka, Alaska · 14670 days ago · 33 km deep · 56 km away
  7. 4.952 km S of Adak, Alaska · 14671 days ago · 33 km deep · 71 km away
  8. 4.983 km SSE of Adak, Alaska · 14672 days ago · 33 km deep · 76 km away
  9. 5.257 km SSE of Adak, Alaska · 14672 days ago · 33 km deep · 50 km away
  10. 4.879 km SE of Adak, Alaska · 14673 days ago · 33 km deep · 51 km away
  11. 4.631 km SW of Atka, Alaska · 14674 days ago · 33 km deep · 99 km away
  12. 4.0101 km SW of Atka, Alaska · 14675 days ago · 33 km deep · 71 km away
  13. 5.026 km SW of Adak, Alaska · 14685 days ago · 57 km deep · 64 km away
  14. 5.527 km E of Adak, Alaska · 14685 days ago · 50 km deep · 17 km away
  15. 4.5Andreanof Islands, Aleutian Islands, Alaska · 14686 days ago · 33 km deep · 78 km away
  16. 4.569 km SE of Adak, Alaska · 14688 days ago · 33 km deep · 55 km away
  17. 4.975 km ESE of Adak, Alaska · 14691 days ago · 33 km deep · 45 km away
  18. 5.063 km SE of Adak, Alaska · 14691 days ago · 33 km deep · 41 km away
  19. 4.761 km SW of Adak, Alaska · 14694 days ago · 33 km deep · 93 km away
  20. 4.484 km SSE of Adak, Alaska · 14695 days ago · 33 km deep · 78 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002wmb. Read Tue, Sep 22, 2026, 9:18 PM UTC.