Idaho earthquakes

M2.4 earthquake 51 km WNW of Challis, Idaho

A magnitude 2.4 earthquake struck 51 km WNW of Challis, Idaho on Wed, Jan 21, 2015, 8:28 AM MST (15:28 UTC), 12 km (8 mi) below the surface.

Automatic solution: the magnitude and location may still be revised.

A larger quake followed: M3.7 22 km SE of Challis, Idaho. This one was a foreshock.

Challis forecastMore in Idaho

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.4 (Mc), micro
Magnitude from
Montana Bureau of Mines and Geology
Local time
UTC
2015-01-21 15:28:07 UTC
Depth
12.2 km (7.6 mi), shallow
Epicenter
44.758° N, 114.777° W
Region
Idaho
Tsunami flag
No
Status
Automatic solution, may be revised

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

An automatic solution; a seismologist may revise it.

Location uncertainty
About 2.2 km horizontally, 3.3 km in depth
Magnitude uncertainty
±0.50
Station coverage gap
90°
Stations used
16

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 24 in the 60 days after this one and 102 in the 30 days before it.

After

  1. 3.622 km SE of Challis, Idaho · 4268 days ago · 13 km deep · 74 km away · felt by 3
  2. 2.315 km NNW of Challis, Idaho · 4265 days ago · 3 km deep · 38 km away
  3. 2.711 km ESE of Challis, Idaho · 4264 days ago · 12 km deep · 63 km away · felt by 1
  4. 2.711 km SE of Challis, Idaho · 4264 days ago · 11 km deep · 63 km away
  5. 2.38 km SE of Challis, Idaho · 4262 days ago · 13 km deep · 60 km away
  6. 2.324 km N of Challis, Idaho · 4262 days ago · 14 km deep · 46 km away
  7. 2.422 km SE of Challis, Idaho · 4261 days ago · 12 km deep · 74 km away
  8. 2.89 km SE of Challis, Idaho · 4256 days ago · 11 km deep · 61 km away
  9. 2.910 km SE of Challis, Idaho · 4256 days ago · 12 km deep · 62 km away · felt by 1
  10. 2.510 km SE of Challis, Idaho · 4256 days ago · 13 km deep · 62 km away
  11. 3.722 km SE of Challis, Idaho · 4254 days ago · 14 km deep · 73 km away
  12. 2.98 km SE of Challis, Idaho · 4254 days ago · 14 km deep · 60 km away · felt by 1
  13. 2.822 km SE of Challis, Idaho · 4254 days ago · 14 km deep · 73 km away
  14. 2.012 km SE of Challis, Idaho · 4252 days ago · 8 km deep · 64 km away
  15. 3.022 km SE of Challis, Idaho · 4249 days ago · 13 km deep · 73 km away
  16. 2.4southern Idaho · 4247 days ago · 13 km deep · 63 km away
  17. 2.0southern Idaho · 4235 days ago · 11 km deep · 62 km away
  18. 3.09 km SE of Challis, Idaho · 4230 days ago · 14 km deep · 61 km away · felt by 2
  19. 2.810 km SE of Challis, Idaho · 4230 days ago · 12 km deep · 62 km away
  20. 3.111 km SE of Challis, Idaho · 4228 days ago · 11 km deep · 63 km away
  21. 1.910 km SE of Challis, Idaho · 4223 days ago · 13 km deep · 62 km away
  22. 2.511 km SE of Challis, Idaho · 4222 days ago · 11 km deep · 63 km away
  23. 2.314 km NW of Challis, Idaho · 4215 days ago · 5 km deep · 39 km away
  24. 2.09 km SE of Challis, Idaho · 4213 days ago · 12 km deep · 61 km away

Before

  1. 2.353 km NW of Challis, Idaho · 4272 days ago · 10 km deep · 3 km away
  2. 2.654 km NW of Challis, Idaho · 4273 days ago · 11 km deep · 3 km away
  3. 2.853 km NW of Challis, Idaho · 4273 days ago · 12 km deep · 2 km away
  4. 2.654 km NW of Challis, Idaho · 4273 days ago · 9 km deep · 3 km away
  5. 2.853 km NW of Challis, Idaho · 4273 days ago · 11 km deep · 2 km away
  6. 2.39 km SE of Challis, Idaho · 4277 days ago · 12 km deep · 61 km away
  7. 2.111 km SE of Challis, Idaho · 4277 days ago · 8 km deep · 63 km away
  8. 2.49 km SE of Challis, Idaho · 4278 days ago · 12 km deep · 61 km away
  9. 2.79 km SE of Challis, Idaho · 4278 days ago · 14 km deep · 61 km away
  10. 2.311 km SE of Challis, Idaho · 4278 days ago · 9 km deep · 63 km away
  11. 3.29 km SE of Challis, Idaho · 4278 days ago · 12 km deep · 61 km away
  12. 3.511 km SE of Challis, Idaho · 4278 days ago · 13 km deep · 63 km away · felt by 1
  13. 2.437 km NW of Challis, Idaho · 4278 days ago · 9 km deep · 18 km away
  14. 2.79 km SE of Challis, Idaho · 4279 days ago · 13 km deep · 61 km away
  15. 2.39 km SE of Challis, Idaho · 4279 days ago · 10 km deep · 61 km away
  16. 2.210 km SE of Challis, Idaho · 4280 days ago · 9 km deep · 62 km away
  17. 2.310 km SE of Challis, Idaho · 4282 days ago · 12 km deep · 62 km away
  18. 2.210 km SE of Challis, Idaho · 4282 days ago · 12 km deep · 62 km away
  19. 2.413 km NW of Challis, Idaho · 4282 days ago · 8 km deep · 39 km away
  20. 2.310 km SE of Challis, Idaho · 4282 days ago · 11 km deep · 62 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb15559356. Read Fri, Oct 2, 2026, 8:34 PM UTC.