Wyoming earthquakes

M1.7 earthquake 63 km SSE of Mammoth, Wyoming

A magnitude 1.7 earthquake struck 63 km SSE of Mammoth, Wyoming on Sun, Jul 25, 2021, 1:21 AM MDT (07:21 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.2 44 km ENE of Warm River, 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
1.7 (ML, local (Richter)), micro
Magnitude from
University of Utah Seismograph Stations
Local time
UTC
2021-07-25 07:21:57 UTC
Depth
7.6 km (4.7 mi), shallow
Epicenter
44.464° N, 110.348° W
Region
Wyoming
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, 1.0 km in depth
Magnitude uncertainty
±0.28
Depth from
From location
Station coverage gap
99°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 39 in the 60 days after this one and at least 200 in the 30 days before it.

After

  1. 1.818 km ENE of West Yellowstone, Montana · 1898 days ago · 6 km deep · 52 km away
  2. 2.145 km ESE of West Yellowstone, Montana · 1897 days ago · 3 km deep · 19 km away
  3. 1.945 km ESE of West Yellowstone, Montana · 1897 days ago · 5 km deep · 19 km away
  4. 1.550 km SE of Mammoth, Wyoming · 1897 days ago · 4 km deep · 16 km away
  5. 1.926 km S of Mammoth, Wyoming · 1893 days ago · 3 km deep · 41 km away
  6. 1.720 km S of Mammoth, Wyoming · 1893 days ago · 4 km deep · 46 km away
  7. 1.923 km S of Mammoth, Wyoming · 1893 days ago · 5 km deep · 44 km away
  8. 1.549 km SSE of Mammoth, Wyoming · 1887 days ago · 4 km deep · 15 km away
  9. 2.027 km S of Mammoth, Wyoming · 1886 days ago · 4 km deep · 40 km away
  10. 1.639 km SSE of Mammoth, Wyoming · 1885 days ago · 6 km deep · 24 km away
  11. 1.514 km NE of Kelly, Wyoming · 1881 days ago · 6 km deep · 83 km away
  12. 1.733 km SE of West Yellowstone, Montana · 1877 days ago · 4 km deep · 34 km away
  13. 3.019 km NE of West Yellowstone, Montana · 1871 days ago · 9 km deep · 59 km away
  14. 1.719 km NE of West Yellowstone, Montana · 1871 days ago · 7 km deep · 59 km away
  15. 1.525 km SE of Mammoth, Wyoming · 1870 days ago · 7 km deep · 41 km away
  16. 1.834 km SSE of Mammoth, Wyoming · 1870 days ago · 4 km deep · 31 km away
  17. 2.641 km SSE of Mammoth, Wyoming · 1857 days ago · 5 km deep · 22 km away
  18. 3.041 km SSE of Mammoth, Wyoming · 1857 days ago · 6 km deep · 22 km away · felt by 9
  19. 1.841 km SSE of Mammoth, Wyoming · 1856 days ago · 4 km deep · 22 km away
  20. 1.641 km SSE of Mammoth, Wyoming · 1856 days ago · 8 km deep · 23 km away
  21. 1.545 km ENE of Warm River, Idaho · 1852 days ago · 15 km deep · 42 km away
  22. 3.244 km ENE of Warm River, Idaho · 1852 days ago · 5 km deep · 43 km away
  23. 2.141 km ENE of Warm River, Idaho · 1852 days ago · 6 km deep · 46 km away
  24. 1.642 km ENE of Warm River, Idaho · 1852 days ago · 5 km deep · 45 km away
  25. 1.643 km ENE of Warm River, Idaho · 1852 days ago · 7 km deep · 44 km away
  26. 1.943 km ENE of Warm River, Idaho · 1852 days ago · 7 km deep · 44 km away
  27. 2.343 km ENE of Warm River, Idaho · 1852 days ago · 5 km deep · 44 km away · felt by 1
  28. 1.6Wyoming · 1852 days ago · 6 km deep · 45 km away
  29. 3.044 km ENE of Warm River, Idaho · 1852 days ago · 11 km deep · 43 km away · felt by 1
  30. 2.08 km ESE of Hebgen Lake Estates, Montana · 1849 days ago · 12 km deep · 66 km away
  31. 1.724 km SE of Mammoth, Wyoming · 1846 days ago · 12 km deep · 42 km away
  32. 1.729 km ESE of West Yellowstone, Montana · 1844 days ago · 7 km deep · 34 km away
  33. 1.629 km E of West Yellowstone, Montana · 1842 days ago · 7 km deep · 36 km away
  34. 1.729 km E of West Yellowstone, Montana · 1842 days ago · 7 km deep · 36 km away
  35. 2.215 km ENE of Hebgen Lake Estates, Montana · 1840 days ago · 8 km deep · 64 km away
  36. 1.629 km E of West Yellowstone, Montana · 1838 days ago · 9 km deep · 36 km away
  37. 1.529 km E of West Yellowstone, Montana · 1838 days ago · 6 km deep · 37 km away
  38. 1.720 km NE of West Yellowstone, Montana · 1838 days ago · 7 km deep · 59 km away
  39. 1.829 km E of West Yellowstone, Montana · 1838 days ago · 7 km deep · 36 km away

Before

  1. 2.119 km ENE of West Yellowstone, Montana · 1899 days ago · 7 km deep · 52 km away
  2. 2.311 km ESE of Jardine, Montana · 1899 days ago · 13 km deep · 64 km away
  3. 2.064 km ESE of West Yellowstone, Montana · 1900 days ago · 8 km deep · 1 km away
  4. 1.865 km SSE of Mammoth, Wyoming · 1900 days ago · 9 km deep · 2 km away
  5. 1.663 km ESE of West Yellowstone, Montana · 1900 days ago · 2 km deep · 3 km away
  6. 1.6Wyoming · 1900 days ago · 5 km deep · 5 km away
  7. 1.867 km ESE of West Yellowstone, Montana · 1900 days ago · 8 km deep · 6 km away
  8. 2.467 km ESE of West Yellowstone, Montana · 1900 days ago · 9 km deep · 5 km away
  9. 1.667 km ESE of West Yellowstone, Montana · 1901 days ago · 11 km deep · 5 km away
  10. 1.7Wyoming · 1901 days ago · 9 km deep · 6 km away
  11. 1.763 km ESE of West Yellowstone, Montana · 1901 days ago · 8 km deep · 1 km away
  12. 1.768 km SSW of Silver Gate, Montana · 1902 days ago · 6 km deep · 6 km away
  13. 1.821 km N of Hebgen Lake Estates, Montana · 1902 days ago · 3 km deep · 86 km away
  14. 1.862 km ESE of West Yellowstone, Montana · 1902 days ago · 8 km deep · 1 km away
  15. 1.863 km ESE of West Yellowstone, Montana · 1902 days ago · 3 km deep · 1 km away
  16. 1.762 km ESE of West Yellowstone, Montana · 1902 days ago · 1 km deep · 4 km away
  17. 1.763 km ESE of West Yellowstone, Montana · 1902 days ago · 2 km deep · 2 km away
  18. 1.663 km ESE of West Yellowstone, Montana · 1902 days ago · 2 km deep · 2 km away
  19. 2.164 km ESE of West Yellowstone, Montana · 1903 days ago · 9 km deep · 1 km away
  20. 1.962 km ESE of West Yellowstone, Montana · 1904 days ago · 3 km deep · 2 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu60449687. Read Sun, Oct 4, 2026, 7:59 PM UTC.