Idaho earthquakes

M1.6 earthquake 11 km N of Spencer, Idaho

A magnitude 1.6 earthquake struck 11 km N of Spencer, Idaho on Thu, Sep 15, 2016, 10:23 PM MDT (04:23 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M2.8 5 km ESE of Hebgen Lake Estates, 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
1.6 (ML, local (Richter)), micro
Magnitude from
Montana Bureau of Mines and Geology
Local time
UTC
2016-09-16 04:23:15 UTC
Depth
2.2 km (1.3 mi), shallow
Epicenter
44.460° N, 112.177° W
Region
Idaho
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, 1.1 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
97°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 22 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 2.029 km SSE of Virginia City, Montana · 3668 days ago · 8 km deep · 69 km away
  2. 2.67 km SW of West Yellowstone, Montana · 3664 days ago · 9 km deep · 82 km away
  3. 2.35 km ESE of Hebgen Lake Estates, Montana · 3659 days ago · 11 km deep · 89 km away
  4. 1.75 km ESE of Hebgen Lake Estates, Montana · 3659 days ago · 11 km deep · 89 km away
  5. 2.85 km ESE of Hebgen Lake Estates, Montana · 3659 days ago · 11 km deep · 89 km away
  6. 2.64 km ESE of Hebgen Lake Estates, Montana · 3659 days ago · 11 km deep · 89 km away
  7. 1.65 km ESE of Hebgen Lake Estates, Montana · 3659 days ago · 11 km deep · 89 km away
  8. 1.74 km ESE of Hebgen Lake Estates, Montana · 3659 days ago · 11 km deep · 89 km away
  9. 1.712 km E of West Yellowstone, Montana · 3657 days ago · 7 km deep · 100 km away
  10. 2.346 km NW of Island Park, Idaho · 3656 days ago · 9 km deep · 42 km away
  11. 1.628 km N of Lima, Montana · 3647 days ago · 8 km deep · 56 km away
  12. 2.110 km NNE of West Yellowstone, Montana · 3646 days ago · 7 km deep · 94 km away
  13. 1.73 km NE of Hebgen Lake Estates, Montana · 3644 days ago · 11 km deep · 88 km away
  14. 1.9Idaho-Montana border region · 3641 days ago · 4 km deep · 18 km away
  15. 1.6Idaho-Montana border region · 3640 days ago · 1 km deep · 19 km away
  16. 2.031 km SSE of West Yellowstone, Montana · 3632 days ago · 8 km deep · 100 km away
  17. 2.141 km NE of Spencer, Idaho · 3630 days ago · 9 km deep · 33 km away
  18. 1.622 km ESE of Leadore, Idaho · 3629 days ago · 5 km deep · 74 km away
  19. 1.513 km NNE of West Yellowstone, Montana · 3625 days ago · 7 km deep · 98 km away
  20. 1.843 km W of Hebgen Lake Estates, Montana · 3622 days ago · 11 km deep · 47 km away
  21. 1.733 km WSW of Dillon, Montana · 3619 days ago · 1 km deep · 92 km away
  22. 2.328 km W of Hebgen Lake Estates, Montana · 3619 days ago · 13 km deep · 62 km away · felt by 2

Before

  1. 1.614 km ENE of Hebgen Lake Estates, Montana · 3673 days ago · 10 km deep · 100 km away
  2. 1.86 km E of Hebgen Lake Estates, Montana · 3677 days ago · 9 km deep · 92 km away
  3. 1.516 km SSW of Alder, Montana · 3677 days ago · 9 km deep · 80 km away
  4. 1.73 km E of Hebgen Lake Estates, Montana · 3680 days ago · 8 km deep · 89 km away
  5. 1.56 km W of Dillon, Montana · 3686 days ago · 4 km deep · 94 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80172099. Read Fri, Oct 2, 2026, 9:10 PM UTC.