Montana earthquakes

M1.7 earthquake 18 km NW of Lima, Montana

A magnitude 1.7 earthquake struck 18 km NW of Lima, Montana on Thu, Jun 15, 2017, 12:30 PM MDT (18:30 UTC), 2 km (2 mi) below the surface.

A larger quake followed: M3.1 44 km NW of Island Park, 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
Montana Bureau of Mines and Geology
Local time
UTC
2017-06-15 18:30:03 UTC
Depth
2.5 km (1.5 mi), shallow
Epicenter
44.746° N, 112.768° 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 0.4 km horizontally, 1.5 km in depth
Magnitude uncertainty
±0.20
Depth from
From location
Station coverage gap
77°
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: 7 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 2.430 km NNW of Lima, Montana · 3380 days ago · 10 km deep · 17 km away
  2. 1.831 km NNW of Lima, Montana · 3379 days ago · 3 km deep · 18 km away
  3. 1.730 km NNW of Lima, Montana · 3379 days ago · 3 km deep · 17 km away
  4. 1.630 km NNW of Lima, Montana · 3376 days ago · 2 km deep · 18 km away
  5. 2.431 km N of Spencer, Idaho · 3361 days ago · 11 km deep · 49 km away
  6. 1.55 km SE of Salmon, Idaho · 3360 days ago · 7 km deep · 95 km away
  7. 3.144 km NW of Island Park, Idaho · 3338 days ago · 6 km deep · 79 km away

Before

  1. 2.231 km NNW of Lima, Montana · 3397 days ago · 1 km deep · 19 km away
  2. 1.932 km NNW of Lima, Montana · 3397 days ago · 7 km deep · 18 km away
  3. 2.029 km NNW of Lima, Montana · 3399 days ago · 5 km deep · 17 km away
  4. 1.631 km NNW of Lima, Montana · 3399 days ago · 5 km deep · 18 km away
  5. 2.123 km E of Challis, Idaho · 3399 days ago · 9 km deep · 96 km away
  6. 1.924 km E of Challis, Idaho · 3401 days ago · 3 km deep · 95 km away
  7. 1.833 km SE of Leadore, Idaho · 3403 days ago · 6 km deep · 43 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80215254. Read Thu, Oct 1, 2026, 5:43 AM UTC.