Idaho earthquakes

M3.6 earthquake 23 km SSE of Challis, Idaho

A magnitude 3.6 earthquake struck 23 km SSE of Challis, Idaho on Fri, Oct 28, 1983, 1:30 PM MDT (19:30 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.4 29 km NW of Mackay, Idaho. This one was a foreshock.

Challis forecastMore in Idaho

Map

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

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The earthquake

Magnitude
3.6 (ml), minor
Local time
UTC
1983-10-28 19:30:45 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
44.313° N, 114.121° W
Region
Idaho
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

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 64 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 5.429 km NW of Mackay, Idaho · 15670 days ago · 7 km deep · 32 km away
  2. 3.733 km ESE of Clayton, Idaho · 15670 days ago · 10 km deep · 18 km away
  3. 4.024 km SSE of Challis, Idaho · 15669 days ago · 10 km deep · 4 km away
  4. 3.626 km SE of Challis, Idaho · 15669 days ago · 10 km deep · 10 km away
  5. 3.527 km E of Clayton, Idaho · 15669 days ago · 10 km deep · 6 km away
  6. 3.929 km E of Clayton, Idaho · 15669 days ago · 10 km deep · 10 km away
  7. 3.641 km SE of Challis, Idaho · 15669 days ago · 10 km deep · 21 km away
  8. 3.627 km WNW of Mackay, Idaho · 15669 days ago · 10 km deep · 39 km away
  9. 5.423 km E of Clayton, Idaho · 15668 days ago · 9 km deep · 9 km away
  10. 5.522 km E of Clayton, Idaho · 15668 days ago · 10 km deep · 4 km away
  11. 3.819 km ESE of Clayton, Idaho · 15668 days ago · 10 km deep · 16 km away
  12. 3.725 km SSE of Challis, Idaho · 15668 days ago · 10 km deep · 4 km away
  13. 4.334 km WNW of Mackay, Idaho · 15668 days ago · 13 km deep · 28 km away
  14. 4.216 km ESE of Clayton, Idaho · 15668 days ago · 10 km deep · 12 km away
  15. 4.014 km E of Clayton, Idaho · 15668 days ago · 10 km deep · 10 km away
  16. 3.924 km SE of Clayton, Idaho · 15668 days ago · 10 km deep · 26 km away
  17. 3.922 km ENE of Clayton, Idaho · 15668 days ago · 10 km deep · 1 km away
  18. 3.723 km E of Clayton, Idaho · 15668 days ago · 10 km deep · 2 km away
  19. 3.624 km SSE of Challis, Idaho · 15668 days ago · 10 km deep · 3 km away
  20. 3.837 km ESE of Clayton, Idaho · 15668 days ago · 10 km deep · 22 km away
  21. 3.623 km SE of Challis, Idaho · 15668 days ago · 10 km deep · 12 km away
  22. 3.524 km SE of Challis, Idaho · 15667 days ago · 10 km deep · 6 km away
  23. 3.632 km E of Clayton, Idaho · 15667 days ago · 10 km deep · 12 km away
  24. 3.735 km ESE of Clayton, Idaho · 15666 days ago · 11 km deep · 21 km away
  25. 3.719 km E of Clayton, Idaho · 15665 days ago · 10 km deep · 8 km away
  26. 4.225 km E of Clayton, Idaho · 15664 days ago · 5 km deep · 6 km away
  27. 4.321 km E of Clayton, Idaho · 15664 days ago · 10 km deep · 2 km away
  28. 3.415 km SSE of Challis, Idaho · 15664 days ago · 10 km deep · 8 km away
  29. 3.921 km E of Clayton, Idaho · 15664 days ago · 10 km deep · 5 km away
  30. 3.618 km E of Clayton, Idaho · 15664 days ago · 10 km deep · 6 km away
  31. 3.517 km SE of Challis, Idaho · 15664 days ago · 10 km deep · 10 km away
  32. 3.621 km ENE of Clayton, Idaho · 15664 days ago · 10 km deep · 2 km away
  33. 3.626 km SSE of Challis, Idaho · 15664 days ago · 10 km deep · 6 km away
  34. 3.535 km NW of Mackay, Idaho · 15663 days ago · 7 km deep · 25 km away
  35. 3.530 km E of Clayton, Idaho · 15663 days ago · 8 km deep · 14 km away
  36. 3.626 km E of Clayton, Idaho · 15662 days ago · 9 km deep · 10 km away
  37. 3.531 km ESE of Clayton, Idaho · 15662 days ago · 11 km deep · 17 km away
  38. 4.336 km ESE of Clayton, Idaho · 15661 days ago · 12 km deep · 22 km away
  39. 3.837 km NW of Mackay, Idaho · 15661 days ago · 10 km deep · 23 km away
  40. 3.527 km E of Clayton, Idaho · 15658 days ago · 7 km deep · 10 km away
  41. 3.47 km ESE of Challis, Idaho · 15658 days ago · 10 km deep · 19 km away
  42. 3.411 km W of Mackay, Idaho · 15657 days ago · 11 km deep · 55 km away
  43. 3.629 km WNW of Mackay, Idaho · 15646 days ago · 10 km deep · 35 km away
  44. 3.521 km E of Clayton, Idaho · 15636 days ago · 10 km deep · 3 km away
  45. 3.310 km ESE of Challis, Idaho · 15634 days ago · 10 km deep · 19 km away
  46. 3.540 km SE of Challis, Idaho · 15632 days ago · 10 km deep · 24 km away
  47. 3.218 km SSE of Challis, Idaho · 15632 days ago · 10 km deep · 5 km away
  48. 3.437 km NW of Mackay, Idaho · 15629 days ago · 10 km deep · 23 km away
  49. 3.819 km E of Clayton, Idaho · 15627 days ago · 10 km deep · 7 km away
  50. 4.019 km E of Clayton, Idaho · 15626 days ago · 10 km deep · 4 km away
  51. 4.513 km SE of Challis, Idaho · 15625 days ago · 10 km deep · 13 km away
  52. 3.213 km SE of Challis, Idaho · 15625 days ago · 10 km deep · 12 km away
  53. 3.218 km ESE of Clayton, Idaho · 15624 days ago · 10 km deep · 11 km away
  54. 3.626 km E of Clayton, Idaho · 15624 days ago · 10 km deep · 9 km away
  55. 4.117 km SSE of Challis, Idaho · 15622 days ago · 10 km deep · 6 km away
  56. 3.725 km E of Clayton, Idaho · 15620 days ago · 10 km deep · 9 km away
  57. 3.528 km SE of Challis, Idaho · 15618 days ago · 10 km deep · 9 km away
  58. 3.612 km SSE of Challis, Idaho · 15618 days ago · 10 km deep · 10 km away
  59. 3.127 km E of Clayton, Idaho · 15617 days ago · 10 km deep · 12 km away
  60. 3.832 km ESE of Clayton, Idaho · 15616 days ago · 10 km deep · 22 km away

The first 60 of 64.

Before

  1. 3.932 km WNW of Mackay, Idaho · 15670 days ago · 10 km deep · 36 km away
  2. 4.123 km E of Clayton, Idaho · 15670 days ago · 10 km deep · 8 km away
  3. 4.022 km E of Clayton, Idaho · 15670 days ago · 10 km deep · 9 km away
  4. 4.023 km SSE of Challis, Idaho · 15670 days ago · 10 km deep · 4 km away
  5. 3.722 km E of Clayton, Idaho · 15670 days ago · 10 km deep · 5 km away
  6. 4.331 km ESE of Clayton, Idaho · 15670 days ago · 10 km deep · 16 km away
  7. 6.9The 1983 Borah Peak Earthquake, Idaho · 15670 days ago · 10 km deep · 35 km away · felt by 3
  8. 3.620 km NW of Challis, Idaho · 15686 days ago · 5 km deep · 43 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001zcb. Read Tue, Sep 22, 2026, 9:16 AM UTC.