Montana earthquakes

M1.5 earthquake 28 km ENE of Leadore, Idaho

A magnitude 1.5 earthquake struck 28 km ENE of Leadore, Idaho on Sat, Jun 20, 2015, 2:54 PM MDT (20:54 UTC), 13 km (8 mi) below the surface.

Automatic solution: the magnitude and location may still be revised.

A larger quake followed: M2.0 29 km N of Spencer, Idaho. This one was a foreshock.

Dillon 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
1.5 (mc), micro
Local time
UTC
2015-06-20 20:54:15 UTC
Depth
12.7 km (7.9 mi), shallow
Epicenter
44.762° N, 113.012° W
Region
Montana
Tsunami flag
No
Status
Automatic solution, may be revised

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

An automatic solution; a seismologist may revise it.

Location uncertainty
About 0.7 km horizontally, 0.8 km in depth
Magnitude uncertainty
±0.50
Station coverage gap
94°
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: 19 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 2.029 km N of Spencer, Idaho · 4104 days ago · 11 km deep · 73 km away
  2. 1.750 km W of Hebgen Lake Estates, Montana · 4099 days ago · 0 km deep · 94 km away
  3. 2.148 km W of Hebgen Lake Estates, Montana · 4099 days ago · 7 km deep · 96 km away
  4. 1.624 km NNE of Spencer, Idaho · 4098 days ago · 9 km deep · 75 km away
  5. 2.38 km ESE of Challis, Idaho · 4098 days ago · 10 km deep · 95 km away
  6. 2.011 km SSE of Challis, Idaho · 4098 days ago · 13 km deep · 98 km away
  7. 1.810 km SE of Challis, Idaho · 4098 days ago · 8 km deep · 97 km away
  8. 1.541 km S of Virginia City, Montana · 4094 days ago · 10 km deep · 79 km away
  9. 1.919 km NW of Lima, Montana · 4091 days ago · 1 km deep · 20 km away
  10. 2.43 km ENE of Challis, Idaho · 4087 days ago · 11 km deep · 98 km away
  11. 1.924 km ENE of Leadore, Idaho · 4086 days ago · 7 km deep · 4 km away
  12. 2.311 km SE of Challis, Idaho · 4078 days ago · 10 km deep · 94 km away
  13. 1.914 km SE of Challis, Idaho · 4078 days ago · 13 km deep · 94 km away
  14. 2.113 km SE of Challis, Idaho · 4078 days ago · 14 km deep · 94 km away
  15. 2.238 km NNE of Challis, Idaho · 4077 days ago · 14 km deep · 77 km away
  16. 1.913 km N of Dillon, Montana · 4065 days ago · 10 km deep · 71 km away
  17. 1.539 km NNE of Spencer, Idaho · 4065 days ago · 8 km deep · 87 km away
  18. 1.521 km NNW of Dillon, Montana · 4064 days ago · 11 km deep · 73 km away
  19. 1.816 km NNE of Dillon, Montana · 4063 days ago · 10 km deep · 75 km away

Before

  1. 1.79 km WNW of Dillon, Montana · 4120 days ago · 10 km deep · 59 km away
  2. 1.735 km SSE of Virginia City, Montana · 4122 days ago · 7 km deep · 99 km away
  3. 1.635 km SSE of Salmon, Idaho · 4124 days ago · 10 km deep · 60 km away
  4. 3.214 km SE of Challis, Idaho · 4125 days ago · 5 km deep · 92 km away
  5. 1.540 km ESE of Salmon, Idaho · 4131 days ago · 10 km deep · 48 km away
  6. 2.311 km ESE of Challis, Idaho · 4136 days ago · 12 km deep · 94 km away
  7. 2.012 km SE of Challis, Idaho · 4139 days ago · 10 km deep · 94 km away
  8. 1.828 km SW of Lima, Montana · 4142 days ago · 12 km deep · 37 km away
  9. 1.926 km SW of Lima, Montana · 4142 days ago · 11 km deep · 40 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb15573935. Read Tue, Sep 22, 2026, 7:50 PM UTC.