Wyoming earthquakes

M1.7 earthquake Wyoming

A magnitude 1.7 earthquake struck in Wyoming on Mon, Dec 6, 2021, 7:43 AM MST (14:43 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M2.6 35 km S of Silver Gate, Montana. This one was a foreshock.

Gardiner forecastMore in Wyoming

Map

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

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The earthquake

Magnitude
1.7 (Md, duration), micro
Magnitude from
University of Utah Seismograph Stations
Local time
UTC
2021-12-06 14:43:49 UTC
Depth
12.5 km (7.8 mi), shallow
Epicenter
44.661° N, 110.005° 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 0.5 km horizontally, 0.9 km in depth
Magnitude uncertainty
±0.51
Depth from
From location
Station coverage gap
117°
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: 14 in the 60 days after this one and 18 in the 30 days before it.

After

  1. 1.828 km S of Mammoth, Wyoming · 1761 days ago · 4 km deep · 54 km away
  2. 2.635 km S of Silver Gate, Montana · 1751 days ago · 15 km deep · 3 km away
  3. 2.566 km NNE of Kelly, Wyoming · 1746 days ago · 11 km deep · 59 km away
  4. 1.966 km NNE of Kelly, Wyoming · 1742 days ago · 13 km deep · 59 km away
  5. 1.634 km ESE of West Yellowstone, Montana · 1742 days ago · 6 km deep · 55 km away
  6. 1.620 km ENE of Hebgen Lake Estates, Montana · 1742 days ago · 6 km deep · 75 km away
  7. 2.366 km NNE of Kelly, Wyoming · 1738 days ago · 11 km deep · 59 km away
  8. 1.743 km ESE of West Yellowstone, Montana · 1733 days ago · 3 km deep · 50 km away
  9. 2.522 km SSW of Mammoth, Wyoming · 1733 days ago · 8 km deep · 65 km away
  10. 1.623 km SSW of Mammoth, Wyoming · 1730 days ago · 7 km deep · 66 km away
  11. 2.122 km SSW of Mammoth, Wyoming · 1726 days ago · 9 km deep · 66 km away · felt by 1
  12. 2.041 km SSW of Silver Gate, Montana · 1726 days ago · 4 km deep · 11 km away
  13. 2.361 km SSE of Mammoth, Wyoming · 1710 days ago · 0 km deep · 30 km away
  14. 1.539 km WNW of Cody, Wyoming · 1706 days ago · 9 km deep · 38 km away

Before

  1. 1.619 km ENE of West Yellowstone, Montana · 1764 days ago · 8 km deep · 70 km away
  2. 1.922 km SSW of Mammoth, Wyoming · 1768 days ago · 4 km deep · 64 km away
  3. 1.946 km ESE of West Yellowstone, Montana · 1770 days ago · 7 km deep · 45 km away
  4. 2.419 km NE of West Yellowstone, Montana · 1771 days ago · 8 km deep · 75 km away
  5. 1.939 km ESE of West Yellowstone, Montana · 1773 days ago · 7 km deep · 50 km away
  6. 1.830 km ESE of West Yellowstone, Montana · 1773 days ago · 8 km deep · 58 km away
  7. 1.829 km S of Mammoth, Wyoming · 1777 days ago · 5 km deep · 54 km away
  8. 1.928 km S of Mammoth, Wyoming · 1779 days ago · 4 km deep · 54 km away
  9. 1.950 km SSE of Mammoth, Wyoming · 1783 days ago · 2 km deep · 32 km away
  10. 1.846 km NE of Alta, Wyoming · 1787 days ago · 10 km deep · 84 km away
  11. 1.727 km S of Mammoth, Wyoming · 1787 days ago · 4 km deep · 54 km away
  12. 1.6Wyoming · 1789 days ago · 9 km deep · 74 km away
  13. 1.540 km SSE of West Yellowstone, Montana · 1789 days ago · 2 km deep · 75 km away
  14. 2.246 km NE of Alta, Wyoming · 1789 days ago · 7 km deep · 84 km away
  15. 2.546 km NE of Alta, Wyoming · 1789 days ago · 10 km deep · 83 km away · felt by 1
  16. 1.621 km ENE of Hebgen Lake Estates, Montana · 1790 days ago · 7 km deep · 78 km away
  17. 2.321 km ENE of Hebgen Lake Estates, Montana · 1791 days ago · 8 km deep · 78 km away
  18. 1.927 km S of Mammoth, Wyoming · 1793 days ago · 4 km deep · 54 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu60470892. Read Sun, Oct 4, 2026, 11:29 PM UTC.