Idaho earthquakes

M2.8 earthquake 53 km NW of Challis, Idaho

A magnitude 2.8 earthquake struck 53 km NW of Challis, Idaho on Tue, Jan 20, 2015, 9:36 PM MST (04:36 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M3.6 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
2.8 (ml), micro
Local time
UTC
2015-01-21 04:36:18 UTC
Depth
11.5 km (7.1 mi), shallow
Epicenter
44.777° N, 114.781° 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.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 3.0 km horizontally, 1.2 km in depth
Station coverage gap
61°
Stations used
30

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 28 in the 60 days after this one and 99 in the 30 days before it.

After

  1. 2.654 km NW of Challis, Idaho · 4263 days ago · 11 km deep · 1 km away
  2. 2.353 km NW of Challis, Idaho · 4262 days ago · 10 km deep · 1 km away
  3. 2.451 km WNW of Challis, Idaho · 4262 days ago · 12 km deep · 2 km away
  4. 3.622 km SE of Challis, Idaho · 4258 days ago · 13 km deep · 75 km away · felt by 3
  5. 2.315 km NNW of Challis, Idaho · 4255 days ago · 3 km deep · 39 km away
  6. 2.711 km ESE of Challis, Idaho · 4254 days ago · 12 km deep · 65 km away · felt by 1
  7. 2.711 km SE of Challis, Idaho · 4254 days ago · 11 km deep · 64 km away
  8. 2.38 km SE of Challis, Idaho · 4252 days ago · 13 km deep · 61 km away
  9. 2.324 km N of Challis, Idaho · 4252 days ago · 14 km deep · 47 km away
  10. 2.422 km SE of Challis, Idaho · 4251 days ago · 12 km deep · 75 km away
  11. 2.89 km SE of Challis, Idaho · 4246 days ago · 11 km deep · 63 km away
  12. 2.910 km SE of Challis, Idaho · 4246 days ago · 12 km deep · 63 km away · felt by 1
  13. 2.510 km SE of Challis, Idaho · 4246 days ago · 13 km deep · 63 km away
  14. 3.722 km SE of Challis, Idaho · 4244 days ago · 14 km deep · 74 km away
  15. 2.98 km SE of Challis, Idaho · 4244 days ago · 14 km deep · 62 km away · felt by 1
  16. 2.822 km SE of Challis, Idaho · 4244 days ago · 14 km deep · 74 km away
  17. 2.012 km SE of Challis, Idaho · 4242 days ago · 8 km deep · 66 km away
  18. 3.022 km SE of Challis, Idaho · 4239 days ago · 13 km deep · 75 km away
  19. 2.4southern Idaho · 4237 days ago · 13 km deep · 65 km away
  20. 2.0southern Idaho · 4225 days ago · 11 km deep · 64 km away
  21. 1.89 km SSE of McCall, Idaho · 4223 days ago · 16 km deep · 100 km away
  22. 3.09 km SE of Challis, Idaho · 4221 days ago · 14 km deep · 62 km away · felt by 2
  23. 2.810 km SE of Challis, Idaho · 4220 days ago · 12 km deep · 63 km away
  24. 3.111 km SE of Challis, Idaho · 4218 days ago · 11 km deep · 65 km away
  25. 1.910 km SE of Challis, Idaho · 4213 days ago · 13 km deep · 63 km away
  26. 2.511 km SE of Challis, Idaho · 4212 days ago · 11 km deep · 64 km away
  27. 2.314 km NW of Challis, Idaho · 4205 days ago · 5 km deep · 40 km away
  28. 2.09 km SE of Challis, Idaho · 4203 days ago · 12 km deep · 62 km away

Before

  1. 2.654 km NW of Challis, Idaho · 4263 days ago · 9 km deep · 1 km away
  2. 2.853 km NW of Challis, Idaho · 4263 days ago · 11 km deep · 1 km away
  3. 2.39 km SE of Challis, Idaho · 4267 days ago · 12 km deep · 63 km away
  4. 2.111 km SE of Challis, Idaho · 4267 days ago · 8 km deep · 64 km away
  5. 2.49 km SE of Challis, Idaho · 4268 days ago · 12 km deep · 63 km away
  6. 2.79 km SE of Challis, Idaho · 4268 days ago · 14 km deep · 62 km away
  7. 2.311 km SE of Challis, Idaho · 4268 days ago · 9 km deep · 64 km away
  8. 3.29 km SE of Challis, Idaho · 4268 days ago · 12 km deep · 62 km away
  9. 3.511 km SE of Challis, Idaho · 4268 days ago · 13 km deep · 65 km away · felt by 1
  10. 2.437 km NW of Challis, Idaho · 4268 days ago · 9 km deep · 18 km away
  11. 2.79 km SE of Challis, Idaho · 4269 days ago · 13 km deep · 63 km away
  12. 2.39 km SE of Challis, Idaho · 4269 days ago · 10 km deep · 62 km away
  13. 2.210 km SE of Challis, Idaho · 4270 days ago · 9 km deep · 63 km away
  14. 2.310 km SE of Challis, Idaho · 4272 days ago · 12 km deep · 63 km away
  15. 2.210 km SE of Challis, Idaho · 4272 days ago · 12 km deep · 63 km away
  16. 2.413 km NW of Challis, Idaho · 4272 days ago · 8 km deep · 41 km away
  17. 2.310 km SE of Challis, Idaho · 4272 days ago · 11 km deep · 63 km away
  18. 2.59 km SE of Challis, Idaho · 4272 days ago · 12 km deep · 63 km away
  19. 2.610 km SE of Challis, Idaho · 4273 days ago · 13 km deep · 63 km away
  20. 3.6southern Idaho · 4273 days ago · 13 km deep · 63 km away · felt by 3

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usc000tjx8 (also filed as mb15533987). Read Tue, Sep 22, 2026, 10:34 PM UTC.