Idaho earthquakes

M1.8 earthquake 8 km NNW of Challis, Idaho

A magnitude 1.8 earthquake struck 8 km NNW of Challis, Idaho on Sun, Apr 28, 2019, 5:00 AM MDT (11:00 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M3.0 11 km NW of Challis, 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
1.8 (ML, local (Richter)), micro
Magnitude from
Montana Bureau of Mines and Geology
Local time
UTC
2019-04-28 11:00:12 UTC
Depth
6.6 km (4.1 mi), shallow
Epicenter
44.569° N, 114.283° 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.

Location uncertainty
About 0.8 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.34
Depth from
From location
Station coverage gap
69°
Stations used
12

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 44 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 1.77 km N of Stanley, Idaho · 2713 days ago · 5 km deep · 61 km away
  2. 1.88 km NW of Challis, Idaho · 2711 days ago · 5 km deep · 1 km away
  3. 1.541 km WSW of Salmon, Idaho · 2710 days ago · 5 km deep · 56 km away
  4. 2.78 km NNW of Challis, Idaho · 2710 days ago · 5 km deep · 1 km away · felt by 5
  5. 1.77 km NNW of Challis, Idaho · 2710 days ago · 9 km deep · 1 km away
  6. 2.37 km NNW of Challis, Idaho · 2709 days ago · 11 km deep · 1 km away
  7. 1.621 km NW of Challis, Idaho · 2709 days ago · 5 km deep · 13 km away · felt by 1
  8. 2.436 km NNW of Stanley, Idaho · 2706 days ago · 12 km deep · 62 km away
  9. 1.84 km WNW of Challis, Idaho · 2702 days ago · 7 km deep · 5 km away
  10. 2.28 km NNW of Challis, Idaho · 2702 days ago · 6 km deep · 1 km away
  11. 2.417 km NW of Challis, Idaho · 2702 days ago · 5 km deep · 10 km away
  12. 1.68 km NNW of Challis, Idaho · 2702 days ago · 6 km deep · 1 km away
  13. 1.78 km NNW of Challis, Idaho · 2702 days ago · 9 km deep · 1 km away
  14. 2.78 km NNW of Challis, Idaho · 2700 days ago · 5 km deep · 0 km away
  15. 1.65 km NNW of Challis, Idaho · 2700 days ago · 11 km deep · 3 km away
  16. 1.97 km NW of Challis, Idaho · 2700 days ago · 9 km deep · 1 km away
  17. 2.2southern Idaho · 2699 days ago · 10 km deep · 0 km away
  18. 2.37 km NW of Challis, Idaho · 2699 days ago · 8 km deep · 1 km away
  19. 2.27 km NNW of Challis, Idaho · 2699 days ago · 9 km deep · 0 km away
  20. 2.18 km NW of Challis, Idaho · 2699 days ago · 9 km deep · 1 km away
  21. 1.87 km NW of Challis, Idaho · 2699 days ago · 10 km deep · 1 km away
  22. 2.49 km NNW of Challis, Idaho · 2699 days ago · 7 km deep · 2 km away
  23. 3.011 km NW of Challis, Idaho · 2698 days ago · 5 km deep · 3 km away
  24. 2.611 km NNW of Challis, Idaho · 2698 days ago · 5 km deep · 4 km away
  25. 2.29 km NW of Challis, Idaho · 2698 days ago · 7 km deep · 2 km away
  26. 2.812 km NNW of Challis, Idaho · 2698 days ago · 5 km deep · 4 km away
  27. 1.98 km NNW of Challis, Idaho · 2698 days ago · 10 km deep · 0 km away
  28. 1.67 km NW of Challis, Idaho · 2697 days ago · 4 km deep · 1 km away
  29. 2.1Idaho-Montana border region · 2696 days ago · 3 km deep · 56 km away
  30. 1.942 km N of Challis, Idaho · 2689 days ago · 10 km deep · 35 km away
  31. 1.98 km NW of Challis, Idaho · 2687 days ago · 11 km deep · 1 km away
  32. 1.66 km NNW of Challis, Idaho · 2686 days ago · 6 km deep · 2 km away
  33. 1.97 km WSW of Mackay, Idaho · 2684 days ago · 0 km deep · 89 km away
  34. 1.68 km NW of Challis, Idaho · 2681 days ago · 6 km deep · 1 km away
  35. 2.27 km NNW of Challis, Idaho · 2681 days ago · 10 km deep · 1 km away
  36. 2.38 km NNW of Challis, Idaho · 2680 days ago · 8 km deep · 0 km away
  37. 1.724 km E of Clayton, Idaho · 2677 days ago · 2 km deep · 38 km away
  38. 1.77 km NNW of Challis, Idaho · 2677 days ago · 9 km deep · 1 km away
  39. 2.226 km ENE of Leadore, Idaho · 2676 days ago · 10 km deep · 99 km away
  40. 1.69 km NNW of Challis, Idaho · 2674 days ago · 3 km deep · 2 km away
  41. 1.738 km NE of Challis, Idaho · 2668 days ago · 8 km deep · 37 km away
  42. 2.37 km NNW of Leadore, Idaho · 2665 days ago · 5 km deep · 73 km away
  43. 1.537 km SW of Salmon, Idaho · 2663 days ago · 16 km deep · 46 km away
  44. 2.425 km SSW of Clayton, Idaho · 2657 days ago · 15 km deep · 62 km away · felt by 1

Before

  1. 1.68 km NW of Challis, Idaho · 2724 days ago · 3 km deep · 2 km away
  2. 1.88 km NNW of Challis, Idaho · 2730 days ago · 7 km deep · 0 km away
  3. 3.49 km NNW of Challis, Idaho · 2732 days ago · 5 km deep · 1 km away · felt by 10
  4. 1.642 km WSW of Salmon, Idaho · 2733 days ago · 5 km deep · 55 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80342139. Read Sun, Oct 4, 2026, 8:48 PM UTC.