Montana earthquakes

M1.5 earthquake 25 km NE of Leadore, Idaho

A magnitude 1.5 earthquake struck 25 km NE of Leadore, Idaho on Mon, Jun 20, 2016, 5:11 AM MDT (11:11 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M2.9 9 km SE of Challis, 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
1.5 (ml), micro
Local time
UTC
2016-06-20 11:11:30 UTC
Depth
3.5 km (2.2 mi), shallow
Epicenter
44.814° N, 113.092° 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 0.5 km horizontally, 6.7 km in depth
Magnitude uncertainty
±0.09
Depth from
Operator assigned
Station coverage gap
141°
Stations used
13

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 1.518 km NW of Lima, Montana · 3751 days ago · 7 km deep · 29 km away
  2. 2.99 km SE of Challis, Idaho · 3749 days ago · 7 km deep · 91 km away
  3. 1.98 km NNW of Challis, Idaho · 3738 days ago · 6 km deep · 97 km away
  4. 1.6Idaho-Montana border region · 3738 days ago · 5 km deep · 66 km away
  5. 1.69 km NNW of Challis, Idaho · 3738 days ago · 7 km deep · 99 km away
  6. 2.212 km NNE of Dillon, Montana · 3733 days ago · 8 km deep · 69 km away
  7. 1.710 km NW of Challis, Idaho · 3733 days ago · 3 km deep · 99 km away
  8. 2.013 km SE of Challis, Idaho · 3732 days ago · 5 km deep · 91 km away
  9. 1.95 km SW of Dillon, Montana · 3729 days ago · 12 km deep · 52 km away
  10. 1.921 km NW of Dillon, Montana · 3719 days ago · 12 km deep · 63 km away
  11. 2.110 km SE of Challis, Idaho · 3708 days ago · 6 km deep · 92 km away

Before

  1. 2.025 km NE of Leadore, Idaho · 3756 days ago · 6 km deep · 0 km away
  2. 1.76 km NNW of Challis, Idaho · 3757 days ago · -2 km deep · 98 km away
  3. 2.320 km SE of Challis, Idaho · 3757 days ago · 10 km deep · 91 km away
  4. 2.529 km S of Virginia City, Montana · 3758 days ago · 3 km deep · 99 km away
  5. 2.1southern Idaho · 3762 days ago · 8 km deep · 90 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80156369. Read Mon, Sep 28, 2026, 1:17 AM UTC.