Montana earthquakes

M1.9 earthquake 24 km SSW of Mammoth, Wyoming

A magnitude 1.9 earthquake struck 24 km SSW of Mammoth, Wyoming on Sun, Oct 27, 2019, 1:44 PM MDT (19:44 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.5 18 km E of Island Park, Idaho. 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
1.9 (ML, local (Richter)), micro
Magnitude from
University of Utah Seismograph Stations
Local time
UTC
2019-10-27 19:44:02 UTC
Depth
4.8 km (3.0 mi), shallow
Epicenter
44.765° N, 110.805° 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 0.3 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.26
Depth from
From location
Station coverage gap
72°
Stations used
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 37 in the 60 days after this one and 33 in the 30 days before it.

After

  1. 2.024 km SSW of Mammoth, Wyoming · 2535 days ago · 5 km deep · 0 km away
  2. 2.841 km NNE of Spencer, Idaho · 2531 days ago · 10 km deep · 88 km away
  3. 1.843 km NE of Spencer, Idaho · 2531 days ago · 11 km deep · 86 km away
  4. 2.740 km NNE of Spencer, Idaho · 2531 days ago · 10 km deep · 88 km away
  5. 1.924 km SSW of Mammoth, Wyoming · 2531 days ago · 2 km deep · 2 km away
  6. 1.643 km NE of Spencer, Idaho · 2531 days ago · 10 km deep · 86 km away
  7. 2.242 km NE of Spencer, Idaho · 2531 days ago · 9 km deep · 86 km away
  8. 2.043 km NE of Spencer, Idaho · 2530 days ago · 8 km deep · 86 km away
  9. 1.842 km NE of Spencer, Idaho · 2528 days ago · 11 km deep · 86 km away
  10. 2.242 km NE of Spencer, Idaho · 2525 days ago · 12 km deep · 86 km away
  11. 3.017 km WNW of Hebgen Lake Estates, Montana · 2522 days ago · 10 km deep · 48 km away · felt by 2
  12. 1.757 km NNE of Kelly, Wyoming · 2512 days ago · 6 km deep · 82 km away
  13. 1.642 km NNE of Spencer, Idaho · 2510 days ago · 11 km deep · 86 km away
  14. 1.846 km ESE of West Yellowstone, Montana · 2510 days ago · 4 km deep · 38 km away
  15. 2.434 km W of Hebgen Lake Estates, Montana · 2508 days ago · 10 km deep · 65 km away
  16. 2.815 km S of Mammoth, Wyoming · 2507 days ago · 6 km deep · 13 km away
  17. 1.746 km SE of West Yellowstone, Montana · 2501 days ago · 4 km deep · 40 km away
  18. 1.849 km ESE of West Yellowstone, Montana · 2501 days ago · 1 km deep · 42 km away
  19. 2.1Wyoming · 2501 days ago · 4 km deep · 40 km away
  20. 1.527 km W of Hebgen Lake Estates, Montana · 2501 days ago · 13 km deep · 58 km away
  21. 1.548 km ESE of West Yellowstone, Montana · 2499 days ago · 4 km deep · 37 km away
  22. 1.530 km SSE of Virginia City, Montana · 2490 days ago · 12 km deep · 82 km away
  23. 2.030 km SSE of Virginia City, Montana · 2489 days ago · 11 km deep · 81 km away
  24. 1.929 km SSE of Virginia City, Montana · 2488 days ago · 6 km deep · 89 km away
  25. 3.440 km ESE of West Yellowstone, Montana · 2487 days ago · 4 km deep · 25 km away · felt by 1
  26. 1.743 km NE of Spencer, Idaho · 2486 days ago · 12 km deep · 86 km away
  27. 3.518 km E of Island Park, Idaho · 2486 days ago · 17 km deep · 49 km away · felt by 5
  28. 2.427 km WNW of Hebgen Lake Estates, Montana · 2485 days ago · 10 km deep · 57 km away · felt by 1
  29. 1.534 km S of Virginia City, Montana · 2481 days ago · 4 km deep · 94 km away
  30. 2.740 km ESE of West Yellowstone, Montana · 2478 days ago · 4 km deep · 25 km away
  31. 2.149 km SE of West Yellowstone, Montana · 2476 days ago · 4 km deep · 48 km away
  32. 1.749 km SE of West Yellowstone, Montana · 2476 days ago · 5 km deep · 48 km away
  33. 1.739 km SSE of Mammoth, Wyoming · 2476 days ago · 5 km deep · 29 km away
  34. 1.7Wyoming · 2476 days ago · 5 km deep · 29 km away
  35. 2.039 km SSE of Mammoth, Wyoming · 2476 days ago · 5 km deep · 29 km away
  36. 2.239 km SSE of Mammoth, Wyoming · 2475 days ago · 5 km deep · 29 km away
  37. 1.639 km SSE of Mammoth, Wyoming · 2475 days ago · 4 km deep · 29 km away

Before

  1. 2.524 km SSW of Mammoth, Wyoming · 2535 days ago · 6 km deep · 0 km away
  2. 1.825 km SSW of Mammoth, Wyoming · 2535 days ago · 4 km deep · 0 km away
  3. 1.824 km SSW of Mammoth, Wyoming · 2535 days ago · 4 km deep · 0 km away
  4. 2.124 km SSW of Mammoth, Wyoming · 2535 days ago · 5 km deep · 1 km away
  5. 1.724 km SSW of Mammoth, Wyoming · 2535 days ago · 3 km deep · 2 km away
  6. 2.224 km SSW of Mammoth, Wyoming · 2536 days ago · 5 km deep · 1 km away
  7. 1.624 km SSW of Mammoth, Wyoming · 2536 days ago · 5 km deep · 1 km away
  8. 1.724 km SSW of Mammoth, Wyoming · 2536 days ago · 4 km deep · 1 km away
  9. 2.624 km SSW of Mammoth, Wyoming · 2536 days ago · 5 km deep · 1 km away
  10. 1.824 km SSW of Mammoth, Wyoming · 2536 days ago · 3 km deep · 1 km away
  11. 1.624 km SSW of Mammoth, Wyoming · 2536 days ago · 2 km deep · 1 km away
  12. 2.024 km SSW of Mammoth, Wyoming · 2536 days ago · 5 km deep · 0 km away
  13. 1.524 km SSW of Mammoth, Wyoming · 2536 days ago · 1 km deep · 2 km away
  14. 2.424 km SSW of Mammoth, Wyoming · 2536 days ago · 7 km deep · 1 km away
  15. 1.746 km SE of Mammoth, Wyoming · 2537 days ago · 2 km deep · 38 km away
  16. 2.314 km W of Livingston, Montana · 2539 days ago · 8 km deep · 99 km away · felt by 3
  17. 2.053 km SSE of Mammoth, Wyoming · 2544 days ago · 3 km deep · 41 km away
  18. 2.152 km SSE of Mammoth, Wyoming · 2544 days ago · 4 km deep · 41 km away
  19. 2.926 km SE of Mammoth, Wyoming · 2546 days ago · 8 km deep · 25 km away
  20. 1.67 km ESE of West Yellowstone, Montana · 2550 days ago · 11 km deep · 23 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu60347317. Read Mon, Oct 5, 2026, 2:30 PM UTC.