Montana earthquakes

M1.6 earthquake 48 km SE of Mammoth, Wyoming

A magnitude 1.6 earthquake struck 48 km SE of Mammoth, Wyoming on Tue, Sep 12, 2017, 8:20 AM MDT (14:20 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.1 43 km ENE of Warm River, 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
1.6 (Md, duration), micro
Magnitude from
University of Utah Seismograph Stations
Local time
UTC
2017-09-12 14:20:14 UTC
Depth
2.1 km (1.3 mi), shallow
Epicenter
44.622° N, 110.335° 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 1.1 km horizontally, 31.6 km in depth
Magnitude uncertainty
±0.23
Depth from
Operator assigned
Station coverage gap
136°
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 33 in the 60 days after this one and 48 in the 30 days before it.

After

  1. 2.423 km ENE of West Yellowstone, Montana · 3307 days ago · 8 km deep · 44 km away
  2. 1.837 km S of Silver Gate, Montana · 3306 days ago · 6 km deep · 21 km away
  3. 1.536 km S of Silver Gate, Montana · 3306 days ago · 14 km deep · 24 km away
  4. 2.044 km ENE of Warm River, Idaho · 3303 days ago · 8 km deep · 53 km away
  5. 3.143 km ENE of Warm River, Idaho · 3303 days ago · 8 km deep · 54 km away · felt by 3
  6. 1.913 km E of Hebgen Lake Estates, Montana · 3302 days ago · 10 km deep · 58 km away
  7. 2.110 km WSW of Hebgen Lake Estates, Montana · 3296 days ago · 6 km deep · 77 km away
  8. 2.213 km ENE of Hebgen Lake Estates, Montana · 3295 days ago · 11 km deep · 58 km away
  9. 2.917 km SSE of Mammoth, Wyoming · 3294 days ago · 7 km deep · 33 km away · felt by 2
  10. 1.767 km ESE of West Yellowstone, Montana · 3290 days ago · 8 km deep · 23 km away
  11. 1.76 km SW of Hebgen Lake Estates, Montana · 3273 days ago · 13 km deep · 74 km away
  12. 1.613 km E of Hebgen Lake Estates, Montana · 3263 days ago · 9 km deep · 57 km away
  13. 1.526 km SSE of Mammoth, Wyoming · 3263 days ago · 4 km deep · 27 km away
  14. 1.611 km NE of West Yellowstone, Montana · 3262 days ago · 8 km deep · 54 km away
  15. 1.511 km NE of West Yellowstone, Montana · 3262 days ago · 8 km deep · 54 km away
  16. 1.525 km SSW of Mammoth, Wyoming · 3262 days ago · 7 km deep · 38 km away
  17. 1.911 km NE of West Yellowstone, Montana · 3262 days ago · 7 km deep · 54 km away
  18. 1.811 km NE of West Yellowstone, Montana · 3262 days ago · 8 km deep · 54 km away
  19. 1.811 km NE of West Yellowstone, Montana · 3262 days ago · 8 km deep · 54 km away
  20. 1.711 km NE of West Yellowstone, Montana · 3262 days ago · 7 km deep · 54 km away
  21. 1.811 km NE of West Yellowstone, Montana · 3260 days ago · 8 km deep · 54 km away
  22. 1.911 km NE of West Yellowstone, Montana · 3260 days ago · 9 km deep · 54 km away
  23. 2.211 km NE of West Yellowstone, Montana · 3260 days ago · 8 km deep · 54 km away
  24. 1.650 km ESE of West Yellowstone, Montana · 3259 days ago · 3 km deep · 25 km away
  25. 1.5Wyoming · 3259 days ago · 3 km deep · 25 km away
  26. 1.950 km ESE of West Yellowstone, Montana · 3259 days ago · 2 km deep · 26 km away
  27. 1.750 km ESE of West Yellowstone, Montana · 3259 days ago · 3 km deep · 25 km away
  28. 1.950 km ESE of West Yellowstone, Montana · 3259 days ago · 4 km deep · 26 km away
  29. 1.650 km ESE of West Yellowstone, Montana · 3259 days ago · 3 km deep · 25 km away
  30. 2.250 km ESE of West Yellowstone, Montana · 3259 days ago · 4 km deep · 26 km away
  31. 1.649 km ESE of West Yellowstone, Montana · 3258 days ago · 4 km deep · 25 km away
  32. 1.845 km ENE of Warm River, Idaho · 3256 days ago · 6 km deep · 55 km away
  33. 2.0Idaho-Montana border region · 3254 days ago · 16 km deep · 72 km away

Before

  1. 1.546 km SE of West Yellowstone, Montana · 3312 days ago · 3 km deep · 35 km away
  2. 1.730 km E of West Yellowstone, Montana · 3314 days ago · 10 km deep · 31 km away
  3. 2.313 km E of Hebgen Lake Estates, Montana · 3316 days ago · 10 km deep · 57 km away
  4. 1.813 km E of Hebgen Lake Estates, Montana · 3316 days ago · 10 km deep · 57 km away
  5. 1.78 km ENE of Hebgen Lake Estates, Montana · 3316 days ago · 7 km deep · 62 km away
  6. 2.014 km E of Hebgen Lake Estates, Montana · 3318 days ago · 11 km deep · 57 km away
  7. 1.849 km N of Kelly, Wyoming · 3320 days ago · 4 km deep · 63 km away
  8. 1.814 km E of Hebgen Lake Estates, Montana · 3323 days ago · 11 km deep · 56 km away
  9. 2.414 km E of Hebgen Lake Estates, Montana · 3323 days ago · 11 km deep · 57 km away
  10. 1.914 km E of Hebgen Lake Estates, Montana · 3323 days ago · 11 km deep · 57 km away
  11. 1.614 km E of Hebgen Lake Estates, Montana · 3323 days ago · 9 km deep · 56 km away
  12. 2.814 km E of Hebgen Lake Estates, Montana · 3323 days ago · 13 km deep · 57 km away · felt by 1
  13. 1.614 km E of Hebgen Lake Estates, Montana · 3323 days ago · 10 km deep · 56 km away
  14. 2.814 km E of Hebgen Lake Estates, Montana · 3323 days ago · 11 km deep · 57 km away
  15. 1.914 km E of Hebgen Lake Estates, Montana · 3323 days ago · 11 km deep · 56 km away
  16. 2.014 km E of Hebgen Lake Estates, Montana · 3323 days ago · 10 km deep · 57 km away
  17. 2.214 km E of Hebgen Lake Estates, Montana · 3324 days ago · 10 km deep · 57 km away
  18. 1.814 km E of Hebgen Lake Estates, Montana · 3324 days ago · 11 km deep · 57 km away
  19. 1.65 km W of Hebgen Lake Estates, Montana · 3327 days ago · 4 km deep · 75 km away
  20. 2.572 km ESE of West Yellowstone, Montana · 3329 days ago · 8 km deep · 33 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu60244417. Read Sat, Oct 3, 2026, 3:58 AM UTC.