Montana earthquakes

M1.6 earthquake 25 km SSE of Mammoth, Wyoming

A magnitude 1.6 earthquake struck 25 km SSE of Mammoth, Wyoming on Sun, May 6, 2018, 9:29 AM MDT (15:29 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.6 5 km E of Hebgen Lake Estates, Montana. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
1.6 (ML, local (Richter)), micro
Magnitude from
University of Utah Seismograph Stations
Local time
UTC
2018-05-06 15:29:17 UTC
Depth
5.4 km (3.4 mi), shallow
Epicenter
44.778° N, 110.533° 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 0.6 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.47
Depth from
From location
Station coverage gap
151°
Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 52 in the 60 days after this one and 63 in the 30 days before it.

After

  1. 1.515 km NE of West Yellowstone, Montana · 3073 days ago · 7 km deep · 33 km away
  2. 1.915 km NE of West Yellowstone, Montana · 3073 days ago · 10 km deep · 34 km away
  3. 1.714 km NE of West Yellowstone, Montana · 3073 days ago · 8 km deep · 34 km away
  4. 1.628 km SSE of West Yellowstone, Montana · 3072 days ago · 4 km deep · 49 km away
  5. 1.59 km ENE of West Yellowstone, Montana · 3070 days ago · 9 km deep · 38 km away
  6. 1.710 km NE of West Yellowstone, Montana · 3066 days ago · 10 km deep · 39 km away
  7. 1.813 km NE of West Yellowstone, Montana · 3066 days ago · 12 km deep · 37 km away
  8. 1.913 km NE of West Yellowstone, Montana · 3065 days ago · 11 km deep · 37 km away
  9. 1.548 km SSE of Mammoth, Wyoming · 3064 days ago · 5 km deep · 22 km away
  10. 1.748 km SSE of Mammoth, Wyoming · 3061 days ago · 5 km deep · 22 km away
  11. 1.813 km ENE of Hebgen Lake Estates, Montana · 3060 days ago · 11 km deep · 39 km away
  12. 1.815 km E of Hebgen Lake Estates, Montana · 3056 days ago · 10 km deep · 37 km away
  13. 1.525 km S of Ennis, Montana · 3055 days ago · 6 km deep · 99 km away
  14. 2.65 km E of Hebgen Lake Estates, Montana · 3055 days ago · 10 km deep · 47 km away · felt by 1
  15. 1.85 km E of Hebgen Lake Estates, Montana · 3054 days ago · 10 km deep · 46 km away
  16. 1.629 km SSE of Mammoth, Wyoming · 3050 days ago · 6 km deep · 5 km away
  17. 1.641 km E of West Yellowstone, Montana · 3048 days ago · 2 km deep · 20 km away
  18. 2.041 km E of West Yellowstone, Montana · 3048 days ago · 4 km deep · 21 km away
  19. 1.959 km ESE of West Yellowstone, Montana · 3048 days ago · 3 km deep · 43 km away
  20. 1.660 km ESE of West Yellowstone, Montana · 3048 days ago · 2 km deep · 44 km away
  21. 1.717 km SSE of Ennis, Montana · 3044 days ago · 6 km deep · 99 km away
  22. 1.925 km SSW of Mammoth, Wyoming · 3040 days ago · 5 km deep · 21 km away
  23. 1.622 km SSE of Mammoth, Wyoming · 3040 days ago · 4 km deep · 4 km away
  24. 2.120 km SSE of Mammoth, Wyoming · 3039 days ago · 10 km deep · 5 km away
  25. 1.822 km SSE of Mammoth, Wyoming · 3039 days ago · 4 km deep · 4 km away
  26. 1.521 km SSE of Mammoth, Wyoming · 3039 days ago · 7 km deep · 4 km away
  27. 2.120 km SSE of Mammoth, Wyoming · 3039 days ago · 10 km deep · 5 km away
  28. 1.821 km SSE of Mammoth, Wyoming · 3039 days ago · 4 km deep · 5 km away
  29. 1.6Wyoming · 3038 days ago · 5 km deep · 5 km away
  30. 1.722 km SSE of Mammoth, Wyoming · 3038 days ago · 5 km deep · 4 km away
  31. 1.938 km S of Silver Gate, Montana · 3038 days ago · 10 km deep · 40 km away
  32. 2.021 km SSE of Mammoth, Wyoming · 3037 days ago · 7 km deep · 5 km away
  33. 1.621 km SSE of Mammoth, Wyoming · 3037 days ago · 8 km deep · 5 km away
  34. 1.929 km ESE of West Yellowstone, Montana · 3037 days ago · 9 km deep · 27 km away
  35. 1.529 km ESE of West Yellowstone, Montana · 3037 days ago · 7 km deep · 28 km away
  36. 1.729 km ESE of West Yellowstone, Montana · 3037 days ago · 8 km deep · 27 km away
  37. 2.159 km NNE of Kelly, Wyoming · 3026 days ago · 6 km deep · 74 km away
  38. 1.631 km ESE of Island Park, Idaho · 3023 days ago · 6 km deep · 61 km away
  39. 1.647 km SE of Mammoth, Wyoming · 3019 days ago · 9 km deep · 22 km away
  40. 1.629 km ESE of West Yellowstone, Montana · 3019 days ago · 6 km deep · 28 km away
  41. 1.629 km ESE of West Yellowstone, Montana · 3019 days ago · 2 km deep · 28 km away
  42. 2.329 km ESE of West Yellowstone, Montana · 3018 days ago · 5 km deep · 28 km away
  43. 2.017 km SSW of Mammoth, Wyoming · 3017 days ago · 9 km deep · 24 km away
  44. 1.562 km SSE of Mammoth, Wyoming · 3017 days ago · 4 km deep · 37 km away
  45. 2.062 km ESE of West Yellowstone, Montana · 3016 days ago · 9 km deep · 45 km away
  46. 2.362 km ESE of West Yellowstone, Montana · 3016 days ago · 7 km deep · 46 km away
  47. 1.96 km SW of West Yellowstone, Montana · 3015 days ago · 13 km deep · 53 km away
  48. 2.5Wyoming · 3014 days ago · 11 km deep · 46 km away
  49. 1.662 km ESE of West Yellowstone, Montana · 3014 days ago · 11 km deep · 46 km away
  50. 1.947 km ESE of West Yellowstone, Montana · 3014 days ago · 2 km deep · 36 km away
  51. 1.847 km ESE of West Yellowstone, Montana · 3014 days ago · 1 km deep · 36 km away
  52. 1.943 km SE of West Yellowstone, Montana · 3014 days ago · -3 km deep · 40 km away

Before

  1. 3.014 km NE of West Yellowstone, Montana · 3073 days ago · 11 km deep · 34 km away · felt by 2
  2. 1.815 km NE of West Yellowstone, Montana · 3074 days ago · 11 km deep · 34 km away
  3. 1.729 km ESE of West Yellowstone, Montana · 3075 days ago · 8 km deep · 29 km away
  4. 2.129 km ESE of West Yellowstone, Montana · 3075 days ago · 6 km deep · 29 km away
  5. 1.75 km ESE of Hebgen Lake Estates, Montana · 3082 days ago · 10 km deep · 47 km away
  6. 1.750 km ESE of West Yellowstone, Montana · 3085 days ago · 2 km deep · 36 km away
  7. 1.99 km ENE of Hebgen Lake Estates, Montana · 3090 days ago · 6 km deep · 43 km away
  8. 1.646 km ESE of West Yellowstone, Montana · 3090 days ago · 5 km deep · 35 km away
  9. 1.928 km SSE of West Yellowstone, Montana · 3091 days ago · 4 km deep · 49 km away
  10. 2.29 km E of Hebgen Lake Estates, Montana · 3097 days ago · 12 km deep · 43 km away
  11. 1.85 km ESE of Hebgen Lake Estates, Montana · 3097 days ago · 10 km deep · 47 km away
  12. 1.75 km ESE of Hebgen Lake Estates, Montana · 3098 days ago · 10 km deep · 47 km away
  13. 1.65 km E of Hebgen Lake Estates, Montana · 3098 days ago · 10 km deep · 47 km away
  14. 1.760 km ESE of West Yellowstone, Montana · 3098 days ago · 8 km deep · 41 km away
  15. 1.961 km ESE of West Yellowstone, Montana · 3098 days ago · 10 km deep · 41 km away
  16. 1.760 km ESE of West Yellowstone, Montana · 3098 days ago · 7 km deep · 41 km away
  17. 1.860 km ESE of West Yellowstone, Montana · 3098 days ago · 7 km deep · 41 km away
  18. 1.660 km ESE of West Yellowstone, Montana · 3098 days ago · 3 km deep · 40 km away
  19. 2.161 km ESE of West Yellowstone, Montana · 3098 days ago · 7 km deep · 41 km away
  20. 1.660 km ESE of West Yellowstone, Montana · 3098 days ago · 7 km deep · 41 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu60280587. Read Sun, Oct 4, 2026, 10:18 PM UTC.