Montana earthquakes

M1.8 earthquake Wyoming

A magnitude 1.8 earthquake struck in Wyoming on Sat, Jun 20, 2015, 5:33 PM MDT (23:33 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M2.5 29 km E of West Yellowstone, 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, local (Richter)), micro
Magnitude from
University of Utah Seismograph Stations
Local time
UTC
2015-06-20 23:33:10 UTC
Depth
2.1 km (1.3 mi), shallow
Epicenter
44.802° N, 110.608° 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 0.9 km horizontally, 31.6 km in depth
Magnitude uncertainty
±0.53
Depth from
Operator assigned
Station coverage gap
234°, poorly surrounded by stations
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 27 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 2.529 km E of West Yellowstone, Montana · 4123 days ago · 8 km deep · 21 km away
  2. 1.720 km SSE of Mammoth, Wyoming · 4122 days ago · 3 km deep · 0 km away
  3. 1.738 km SSE of Mammoth, Wyoming · 4119 days ago · 5 km deep · 18 km away
  4. 1.925 km SE of Mammoth, Wyoming · 4119 days ago · 5 km deep · 8 km away
  5. 2.148 km W of Hebgen Lake Estates, Montana · 4111 days ago · 7 km deep · 94 km away
  6. 1.750 km W of Hebgen Lake Estates, Montana · 4111 days ago · 0 km deep · 96 km away
  7. 1.612 km NNW of Hebgen Lake Estates, Montana · 4110 days ago · 3 km deep · 51 km away
  8. 1.931 km ESE of West Yellowstone, Montana · 4110 days ago · 2 km deep · 27 km away
  9. 1.723 km SSW of Mammoth, Wyoming · 4105 days ago · 10 km deep · 15 km away
  10. 1.625 km W of Hebgen Lake Estates, Montana · 4105 days ago · 1 km deep · 72 km away
  11. 1.833 km SSE of Mammoth, Wyoming · 4103 days ago · 2 km deep · 13 km away
  12. 2.132 km SSE of Mammoth, Wyoming · 4103 days ago · 2 km deep · 12 km away
  13. 1.94 km WSW of Hebgen Lake Estates, Montana · 4097 days ago · 14 km deep · 50 km away
  14. 1.922 km NE of West Yellowstone, Montana · 4095 days ago · 5 km deep · 22 km away
  15. 1.850 km SE of West Yellowstone, Montana · 4093 days ago · 2 km deep · 46 km away
  16. 1.751 km SE of West Yellowstone, Montana · 4093 days ago · 2 km deep · 46 km away
  17. 1.716 km SSE of West Yellowstone, Montana · 4085 days ago · 13 km deep · 44 km away
  18. 1.616 km SSE of West Yellowstone, Montana · 4085 days ago · 14 km deep · 44 km away
  19. 1.816 km SSE of West Yellowstone, Montana · 4085 days ago · 13 km deep · 44 km away
  20. 1.916 km SSE of West Yellowstone, Montana · 4085 days ago · 15 km deep · 44 km away
  21. 1.716 km SSE of West Yellowstone, Montana · 4085 days ago · 14 km deep · 44 km away
  22. 1.516 km SSE of West Yellowstone, Montana · 4085 days ago · 13 km deep · 43 km away
  23. 1.629 km ESE of Island Park, Idaho · 4077 days ago · 12 km deep · 58 km away
  24. 1.570 km NNE of Kelly, Wyoming · 4076 days ago · 10 km deep · 74 km away
  25. 2.329 km WNW of Hebgen Lake Estates, Montana · 4074 days ago · 7 km deep · 74 km away
  26. 1.825 km SE of Mammoth, Wyoming · 4072 days ago · 7 km deep · 10 km away
  27. 1.735 km E of West Yellowstone, Montana · 4069 days ago · 6 km deep · 20 km away

Before

  1. 1.935 km E of West Yellowstone, Montana · 4124 days ago · 2 km deep · 19 km away
  2. 1.6Wyoming · 4124 days ago · 5 km deep · 20 km away
  3. 1.548 km SE of West Yellowstone, Montana · 4130 days ago · 4 km deep · 49 km away
  4. 1.848 km SE of West Yellowstone, Montana · 4130 days ago · 4 km deep · 49 km away
  5. 2.448 km SE of West Yellowstone, Montana · 4130 days ago · 4 km deep · 49 km away
  6. 1.624 km SSE of West Yellowstone, Montana · 4132 days ago · 5 km deep · 47 km away
  7. 1.519 km NE of West Yellowstone, Montana · 4133 days ago · 8 km deep · 24 km away
  8. 1.735 km SSE of Virginia City, Montana · 4134 days ago · 7 km deep · 97 km away
  9. 1.713 km SE of West Yellowstone, Montana · 4142 days ago · 14 km deep · 40 km away
  10. 1.641 km SE of West Yellowstone, Montana · 4144 days ago · 6 km deep · 52 km away
  11. 2.115 km WSW of Livingston, Montana · 4153 days ago · 12 km deep · 92 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu60115067. Read Sun, Oct 4, 2026, 12:41 PM UTC.