Alaska earthquakes

M3.9 earthquake 56 km S of Adak, Alaska

A magnitude 3.9 earthquake struck 56 km S of Adak, Alaska on Fri, Jun 21, 1996, 11:05 AM HADT (20:05 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.5 89 km WSW 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
3.9 (mb), minor
Local time
UTC
1996-06-21 20:05:47 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.368° N, 176.760° 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 1.5 and up: 36 in the 60 days after this one and 163 in the 30 days before it.

After

  1. 3.690 km SE of Adak, Alaska · 11050 days ago · 33 km deep · 64 km away
  2. 4.589 km WSW of Adak, Alaska · 11049 days ago · 33 km deep · 69 km away
  3. 4.3101 km S of Adak, Alaska · 11048 days ago · 33 km deep · 51 km away
  4. 4.288 km SSW of Adak, Alaska · 11046 days ago · 33 km deep · 35 km away
  5. 4.644 km SSW of Adak, Alaska · 11044 days ago · 33 km deep · 22 km away
  6. 4.652 km WSW of Adak, Alaska · 11043 days ago · 33 km deep · 48 km away
  7. 5.047 km W of Adak, Alaska · 11042 days ago · 33 km deep · 67 km away
  8. 4.0105 km SW of Adak, Alaska · 11041 days ago · 33 km deep · 70 km away
  9. 3.992 km S of Adak, Alaska · 11041 days ago · 33 km deep · 43 km away
  10. 4.0101 km SSW of Adak, Alaska · 11039 days ago · 33 km deep · 53 km away
  11. 4.549 km SSW of Adak, Alaska · 11036 days ago · 33 km deep · 18 km away
  12. 4.096 km SW of Adak, Alaska · 11034 days ago · 33 km deep · 54 km away
  13. 3.9117 km SW of Adak, Alaska · 11033 days ago · 33 km deep · 74 km away
  14. 3.997 km S of Adak, Alaska · 11033 days ago · 33 km deep · 41 km away
  15. 4.092 km S of Adak, Alaska · 11032 days ago · 33 km deep · 35 km away
  16. 3.8101 km S of Adak, Alaska · 11032 days ago · 33 km deep · 45 km away
  17. 3.690 km SSW of Adak, Alaska · 11032 days ago · 33 km deep · 44 km away
  18. 4.281 km SSW of Adak, Alaska · 11032 days ago · 33 km deep · 28 km away
  19. 4.762 km WSW of Adak, Alaska · 11032 days ago · 33 km deep · 58 km away
  20. 4.290 km WSW of Adak, Alaska · 11029 days ago · 33 km deep · 72 km away
  21. 4.089 km SW of Adak, Alaska · 11029 days ago · 33 km deep · 65 km away
  22. 5.2101 km SW of Adak, Alaska · 11028 days ago · 33 km deep · 76 km away
  23. 3.8101 km S of Adak, Alaska · 11027 days ago · 33 km deep · 48 km away
  24. 5.187 km S of Adak, Alaska · 11027 days ago · 33 km deep · 34 km away
  25. 3.995 km S of Adak, Alaska · 11027 days ago · 33 km deep · 40 km away
  26. 4.074 km SW of Adak, Alaska · 11026 days ago · 33 km deep · 53 km away
  27. 4.496 km SSW of Adak, Alaska · 11025 days ago · 33 km deep · 45 km away
  28. 4.382 km S of Adak, Alaska · 11023 days ago · 33 km deep · 32 km away
  29. 5.181 km WSW of Adak, Alaska · 11022 days ago · 33 km deep · 65 km away
  30. 4.291 km W of Adak, Alaska · 11019 days ago · 33 km deep · 97 km away
  31. 4.5121 km SW of Adak, Alaska · 11017 days ago · 33 km deep · 91 km away
  32. 5.138 km WSW of Adak, Alaska · 11017 days ago · 55 km deep · 45 km away
  33. 4.157 km SSE of Adak, Alaska · 11015 days ago · 33 km deep · 30 km away
  34. 4.2Andreanof Islands, Aleutian Islands, Alaska · 11015 days ago · 33 km deep · 52 km away
  35. 4.064 km SSE of Adak, Alaska · 10999 days ago · 33 km deep · 29 km away
  36. 4.364 km S of Adak, Alaska · 10994 days ago · 33 km deep · 14 km away

Before

  1. 4.359 km SW of Adak, Alaska · 11050 days ago · 45 km deep · 36 km away
  2. 4.0132 km SW of Adak, Alaska · 11050 days ago · 33 km deep · 93 km away
  3. 4.2107 km SW of Adak, Alaska · 11050 days ago · 33 km deep · 70 km away
  4. 4.1104 km S of Adak, Alaska · 11051 days ago · 33 km deep · 52 km away
  5. 3.980 km SSE of Adak, Alaska · 11051 days ago · 33 km deep · 34 km away
  6. 4.276 km SSE of Adak, Alaska · 11051 days ago · 33 km deep · 30 km away
  7. 4.275 km S of Adak, Alaska · 11051 days ago · 33 km deep · 19 km away
  8. 3.799 km SSW of Adak, Alaska · 11051 days ago · 33 km deep · 48 km away
  9. 4.883 km WSW of Adak, Alaska · 11052 days ago · 33 km deep · 70 km away
  10. 4.163 km SSW of Adak, Alaska · 11052 days ago · 33 km deep · 7 km away
  11. 4.2100 km WSW of Adak, Alaska · 11052 days ago · 33 km deep · 78 km away
  12. 4.595 km WSW of Adak, Alaska · 11052 days ago · 33 km deep · 73 km away
  13. 4.191 km WSW of Adak, Alaska · 11053 days ago · 33 km deep · 72 km away
  14. 3.9131 km SSW of Adak, Alaska · 11053 days ago · 33 km deep · 80 km away
  15. 4.564 km SW of Adak, Alaska · 11053 days ago · 33 km deep · 34 km away
  16. 4.292 km S of Adak, Alaska · 11054 days ago · 33 km deep · 43 km away
  17. 3.8Andreanof Islands, Aleutian Islands, Alaska · 11055 days ago · 33 km deep · 50 km away
  18. 3.7118 km SSW of Adak, Alaska · 11055 days ago · 33 km deep · 65 km away
  19. 5.055 km SSW of Adak, Alaska · 11055 days ago · 33 km deep · 5 km away
  20. 3.772 km SSE of Adak, Alaska · 11055 days ago · 33 km deep · 34 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0007k35. Read Tue, Sep 22, 2026, 4:43 PM UTC.