Montana earthquakes

M1.8 earthquake 40 km SSE of Mammoth, Wyoming

A magnitude 1.8 earthquake struck 40 km SSE of Mammoth, Wyoming on Sat, Sep 3, 2016, 11:43 PM MDT (05:43 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M2.8 5 km ESE of Hebgen Lake Estates, Montana. This one was a foreshock.

Gardiner forecastMore in Montana

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), micro
Local time
UTC
2016-09-04 05:43:28 UTC
Depth
2.7 km (1.7 mi), shallow
Epicenter
44.664° N, 110.442° W
Region
Montana
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 1.2 km horizontally, 31.6 km in depth
Magnitude uncertainty
±0.51
Depth from
Operator assigned
Station coverage gap
204°, poorly surrounded by stations
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 57 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 1.740 km SSE of Mammoth, Wyoming · 3678 days ago · 6 km deep · 1 km away
  2. 1.939 km SSE of Mammoth, Wyoming · 3678 days ago · 4 km deep · 1 km away
  3. 1.73 km E of Hebgen Lake Estates, Montana · 3677 days ago · 8 km deep · 56 km away
  4. 1.641 km SSE of Mammoth, Wyoming · 3676 days ago · 2 km deep · 1 km away
  5. 2.441 km SSE of Mammoth, Wyoming · 3676 days ago · 6 km deep · 1 km away
  6. 1.541 km SSE of Mammoth, Wyoming · 3676 days ago · 2 km deep · 2 km away
  7. 1.523 km SE of Mammoth, Wyoming · 3675 days ago · 11 km deep · 18 km away
  8. 1.86 km E of Hebgen Lake Estates, Montana · 3674 days ago · 9 km deep · 54 km away
  9. 1.817 km S of Mammoth, Wyoming · 3673 days ago · 5 km deep · 27 km away
  10. 1.614 km ENE of Hebgen Lake Estates, Montana · 3670 days ago · 10 km deep · 47 km away
  11. 2.126 km SSW of Mammoth, Wyoming · 3666 days ago · 8 km deep · 29 km away
  12. 1.624 km SSW of Mammoth, Wyoming · 3666 days ago · 7 km deep · 29 km away
  13. 1.525 km SSW of Mammoth, Wyoming · 3666 days ago · 6 km deep · 29 km away
  14. 1.625 km SSW of Mammoth, Wyoming · 3666 days ago · 8 km deep · 29 km away
  15. 1.621 km SE of Mammoth, Wyoming · 3664 days ago · 2 km deep · 22 km away
  16. 2.67 km SW of West Yellowstone, Montana · 3661 days ago · 9 km deep · 58 km away
  17. 1.638 km SSE of West Yellowstone, Montana · 3658 days ago · 3 km deep · 47 km away
  18. 2.35 km ESE of Hebgen Lake Estates, Montana · 3656 days ago · 11 km deep · 55 km away
  19. 1.75 km ESE of Hebgen Lake Estates, Montana · 3656 days ago · 11 km deep · 55 km away
  20. 2.85 km ESE of Hebgen Lake Estates, Montana · 3656 days ago · 11 km deep · 55 km away
  21. 2.64 km ESE of Hebgen Lake Estates, Montana · 3656 days ago · 11 km deep · 56 km away
  22. 1.65 km ESE of Hebgen Lake Estates, Montana · 3656 days ago · 11 km deep · 55 km away
  23. 1.74 km ESE of Hebgen Lake Estates, Montana · 3656 days ago · 11 km deep · 56 km away
  24. 2.257 km NNE of Kelly, Wyoming · 3656 days ago · 8 km deep · 62 km away
  25. 2.5Wyoming · 3654 days ago · 7 km deep · 61 km away
  26. 1.712 km E of West Yellowstone, Montana · 3654 days ago · 7 km deep · 40 km away
  27. 2.226 km SSW of Mammoth, Wyoming · 3651 days ago · 7 km deep · 28 km away
  28. 1.836 km E of West Yellowstone, Montana · 3649 days ago · 5 km deep · 16 km away
  29. 1.837 km S of Silver Gate, Montana · 3648 days ago · 15 km deep · 35 km away
  30. 2.237 km S of Silver Gate, Montana · 3648 days ago · 14 km deep · 34 km away
  31. 2.339 km S of Silver Gate, Montana · 3648 days ago · 11 km deep · 34 km away
  32. 1.639 km SE of Mammoth, Wyoming · 3646 days ago · 6 km deep · 4 km away
  33. 2.110 km NNE of West Yellowstone, Montana · 3643 days ago · 7 km deep · 50 km away
  34. 1.73 km NE of Hebgen Lake Estates, Montana · 3641 days ago · 11 km deep · 58 km away
  35. 1.837 km S of Silver Gate, Montana · 3641 days ago · 15 km deep · 34 km away
  36. 1.839 km S of Silver Gate, Montana · 3640 days ago · 11 km deep · 33 km away
  37. 1.941 km SSE of Mammoth, Wyoming · 3637 days ago · 5 km deep · 2 km away
  38. 1.532 km ESE of West Yellowstone, Montana · 3635 days ago · 8 km deep · 22 km away
  39. 2.541 km SSE of Mammoth, Wyoming · 3631 days ago · 6 km deep · 1 km away
  40. 2.2Wyoming · 3631 days ago · 6 km deep · 1 km away
  41. 2.423 km ENE of Hebgen Lake Estates, Montana · 3630 days ago · 8 km deep · 41 km away
  42. 2.031 km SSE of West Yellowstone, Montana · 3629 days ago · 8 km deep · 48 km away
  43. 2.047 km SSE of Mammoth, Wyoming · 3628 days ago · 5 km deep · 8 km away
  44. 2.047 km SSE of Mammoth, Wyoming · 3628 days ago · 2 km deep · 7 km away
  45. 2.246 km SSE of Mammoth, Wyoming · 3628 days ago · 2 km deep · 7 km away
  46. 1.747 km SSE of Mammoth, Wyoming · 3628 days ago · 4 km deep · 7 km away
  47. 1.948 km SSE of Mammoth, Wyoming · 3628 days ago · 5 km deep · 8 km away
  48. 1.847 km SSE of Mammoth, Wyoming · 3628 days ago · 3 km deep · 7 km away
  49. 1.648 km SSE of Mammoth, Wyoming · 3628 days ago · 2 km deep · 8 km away
  50. 1.647 km SSE of Mammoth, Wyoming · 3628 days ago · 3 km deep · 8 km away
  51. 1.848 km SSE of Mammoth, Wyoming · 3628 days ago · 4 km deep · 9 km away
  52. 1.948 km SSE of Mammoth, Wyoming · 3628 days ago · 4 km deep · 8 km away
  53. 1.619 km NE of West Yellowstone, Montana · 3628 days ago · 6 km deep · 41 km away
  54. 1.513 km NNE of West Yellowstone, Montana · 3622 days ago · 7 km deep · 46 km away
  55. 1.834 km S of Silver Gate, Montana · 3622 days ago · 2 km deep · 32 km away
  56. 1.733 km S of Silver Gate, Montana · 3621 days ago · 15 km deep · 35 km away
  57. 1.549 km SE of West Yellowstone, Montana · 3620 days ago · 5 km deep · 36 km away

Before

  1. 1.646 km ESE of West Yellowstone, Montana · 3679 days ago · 4 km deep · 26 km away
  2. 1.541 km SSE of Mammoth, Wyoming · 3679 days ago · 2 km deep · 1 km away
  3. 2.041 km SSE of Mammoth, Wyoming · 3685 days ago · 5 km deep · 1 km away
  4. 1.546 km SSE of Mammoth, Wyoming · 3693 days ago · 1 km deep · 7 km away
  5. 1.531 km ESE of Island Park, Idaho · 3699 days ago · 12 km deep · 59 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu60160437. Read Tue, Sep 29, 2026, 10:45 PM UTC.