Montana earthquakes

M1.5 earthquake 16 km SSW of Alder, Montana

A magnitude 1.5 earthquake struck 16 km SSW of Alder, Montana on Wed, Sep 7, 2016, 3:11 PM MDT (21:11 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M3.3 16 km S of Whitehall, Montana. 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, local (Richter)), micro
Magnitude from
Montana Bureau of Mines and Geology
Local time
UTC
2016-09-07 21:11:46 UTC
Depth
8.9 km (5.6 mi), shallow
Epicenter
45.179° N, 112.161° 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, 0.9 km in depth
Magnitude uncertainty
±0.27
Depth from
From location
Station coverage gap
94°
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 30 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 1.86 km E of Hebgen Lake Estates, Montana · 3679 days ago · 9 km deep · 94 km away
  2. 1.616 km S of Whitehall, Montana · 3678 days ago · 5 km deep · 60 km away
  3. 3.316 km S of Whitehall, Montana · 3676 days ago · 7 km deep · 61 km away · felt by 2
  4. 1.614 km ENE of Hebgen Lake Estates, Montana · 3676 days ago · 10 km deep · 100 km away
  5. 1.916 km S of Whitehall, Montana · 3672 days ago · 4 km deep · 60 km away
  6. 2.317 km S of Whitehall, Montana · 3671 days ago · 3 km deep · 60 km away
  7. 1.611 km N of Spencer, Idaho · 3671 days ago · 2 km deep · 80 km away
  8. 2.029 km SSE of Virginia City, Montana · 3670 days ago · 8 km deep · 28 km away
  9. 1.517 km S of Whitehall, Montana · 3670 days ago · 4 km deep · 59 km away
  10. 2.35 km ESE of Hebgen Lake Estates, Montana · 3662 days ago · 11 km deep · 94 km away
  11. 1.75 km ESE of Hebgen Lake Estates, Montana · 3662 days ago · 11 km deep · 94 km away
  12. 2.85 km ESE of Hebgen Lake Estates, Montana · 3661 days ago · 11 km deep · 94 km away
  13. 2.64 km ESE of Hebgen Lake Estates, Montana · 3661 days ago · 11 km deep · 94 km away
  14. 1.65 km ESE of Hebgen Lake Estates, Montana · 3661 days ago · 11 km deep · 94 km away
  15. 1.74 km ESE of Hebgen Lake Estates, Montana · 3661 days ago · 11 km deep · 94 km away
  16. 2.717 km S of Whitehall, Montana · 3661 days ago · 6 km deep · 60 km away
  17. 2.217 km S of Whitehall, Montana · 3661 days ago · 4 km deep · 59 km away
  18. 1.517 km S of Whitehall, Montana · 3661 days ago · 5 km deep · 59 km away
  19. 2.346 km NW of Island Park, Idaho · 3658 days ago · 9 km deep · 59 km away
  20. 1.628 km N of Lima, Montana · 3649 days ago · 8 km deep · 44 km away
  21. 2.110 km NNE of West Yellowstone, Montana · 3649 days ago · 7 km deep · 99 km away
  22. 1.73 km NE of Hebgen Lake Estates, Montana · 3646 days ago · 11 km deep · 90 km away
  23. 1.9Idaho-Montana border region · 3643 days ago · 4 km deep · 66 km away
  24. 1.6Idaho-Montana border region · 3642 days ago · 1 km deep · 65 km away
  25. 2.141 km NE of Spencer, Idaho · 3633 days ago · 9 km deep · 62 km away
  26. 1.622 km ESE of Leadore, Idaho · 3631 days ago · 5 km deep · 94 km away
  27. 2.112 km WSW of Sheridan, Montana · 3627 days ago · 3 km deep · 32 km away
  28. 1.843 km W of Hebgen Lake Estates, Montana · 3624 days ago · 11 km deep · 58 km away
  29. 1.733 km WSW of Dillon, Montana · 3622 days ago · 1 km deep · 67 km away
  30. 2.328 km W of Hebgen Lake Estates, Montana · 3622 days ago · 13 km deep · 65 km away · felt by 2

Before

  1. 1.717 km S of Whitehall, Montana · 3681 days ago · 4 km deep · 60 km away
  2. 1.717 km S of Whitehall, Montana · 3681 days ago · 2 km deep · 59 km away
  3. 2.917 km S of Whitehall, Montana · 3682 days ago · 8 km deep · 60 km away
  4. 3.316 km S of Whitehall, Montana · 3682 days ago · 8 km deep · 61 km away · felt by 6
  5. 1.73 km E of Hebgen Lake Estates, Montana · 3683 days ago · 8 km deep · 92 km away
  6. 2.216 km S of Whitehall, Montana · 3683 days ago · 7 km deep · 60 km away
  7. 4.016 km S of Whitehall, Montana · 3683 days ago · 8 km deep · 61 km away · felt by 21
  8. 1.56 km W of Dillon, Montana · 3688 days ago · 4 km deep · 44 km away
  9. 1.618 km S of Whitehall, Montana · 3690 days ago · 5 km deep · 59 km away
  10. 1.913 km N of Dillon, Montana · 3694 days ago · 6 km deep · 40 km away
  11. 1.715 km SSE of Pony, Montana · 3695 days ago · 2 km deep · 46 km away
  12. 2.617 km S of Whitehall, Montana · 3702 days ago · 1 km deep · 59 km away
  13. 1.616 km S of Whitehall, Montana · 3706 days ago · 4 km deep · 60 km away
  14. 3.217 km S of Whitehall, Montana · 3706 days ago · 9 km deep · 60 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80170154. Read Mon, Oct 5, 2026, 3:53 AM UTC.