Idaho earthquakes

M2.1 earthquake 22 km W of Challis, Idaho

A magnitude 2.1 earthquake struck 22 km W of Challis, Idaho on Mon, Feb 29, 2016, 5:43 AM MST (12:43 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.6 14 km NE 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
2.1 (ml), micro
Local time
UTC
2016-02-29 12:43:14 UTC
Depth
5.0 km (3.1 mi), shallow
Epicenter
44.543° N, 114.507° 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 1.2 km horizontally, 31.6 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
197°, poorly surrounded by stations
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 25 in the 60 days after this one and 29 in the 30 days before it.

After

  1. 1.724 km WNW of Challis, Idaho · 3866 days ago · 8 km deep · 2 km away
  2. 1.623 km W of Challis, Idaho · 3866 days ago · 2 km deep · 2 km away
  3. 1.714 km NE of Challis, Idaho · 3866 days ago · -2 km deep · 32 km away
  4. 2.223 km WNW of Challis, Idaho · 3866 days ago · 7 km deep · 2 km away
  5. 2.013 km SE of Challis, Idaho · 3865 days ago · 5 km deep · 34 km away
  6. 1.622 km WNW of Challis, Idaho · 3865 days ago · 7 km deep · 2 km away
  7. 1.514 km W of Clayton, Idaho · 3865 days ago · 6 km deep · 33 km away
  8. 2.523 km W of Challis, Idaho · 3863 days ago · 1 km deep · 2 km away
  9. 1.714 km NE of Challis, Idaho · 3862 days ago · 5 km deep · 34 km away
  10. 1.822 km W of Challis, Idaho · 3859 days ago · 4 km deep · 1 km away
  11. 2.614 km NE of Challis, Idaho · 3854 days ago · 10 km deep · 31 km away
  12. 1.8southern Idaho · 3853 days ago · 7 km deep · 17 km away
  13. 1.525 km SE of Challis, Idaho · 3853 days ago · 5 km deep · 46 km away
  14. 2.2southern Idaho · 3853 days ago · 9 km deep · 32 km away
  15. 1.622 km WNW of Challis, Idaho · 3850 days ago · 3 km deep · 1 km away
  16. 1.917 km NNE of Challis, Idaho · 3849 days ago · 5 km deep · 33 km away · felt by 1
  17. 1.622 km WNW of Challis, Idaho · 3847 days ago · 5 km deep · 2 km away
  18. 1.510 km SE of Challis, Idaho · 3842 days ago · 5 km deep · 32 km away
  19. 1.629 km E of Clayton, Idaho · 3840 days ago · 5 km deep · 51 km away
  20. 1.722 km WNW of Challis, Idaho · 3840 days ago · 6 km deep · 0 km away
  21. 1.919 km NE of Challis, Idaho · 3832 days ago · 7 km deep · 36 km away
  22. 1.514 km NE of Challis, Idaho · 3817 days ago · 6 km deep · 32 km away
  23. 1.64 km NW of Challis, Idaho · 3812 days ago · 7 km deep · 18 km away
  24. 1.640 km NNW of Stanley, Idaho · 3808 days ago · 9 km deep · 44 km away
  25. 2.638 km NNW of Stanley, Idaho · 3808 days ago · 4 km deep · 44 km away

Before

  1. 1.622 km WNW of Challis, Idaho · 3867 days ago · 4 km deep · 1 km away
  2. 2.114 km NE of Challis, Idaho · 3867 days ago · 5 km deep · 32 km away
  3. 1.722 km WNW of Challis, Idaho · 3868 days ago · 5 km deep · 0 km away
  4. 3.615 km NE of Challis, Idaho · 3868 days ago · 7 km deep · 32 km away · felt by 9
  5. 2.316 km NNE of Challis, Idaho · 3868 days ago · 6 km deep · 32 km away
  6. 2.022 km WNW of Challis, Idaho · 3869 days ago · 7 km deep · 1 km away
  7. 1.821 km W of Challis, Idaho · 3869 days ago · 3 km deep · 0 km away
  8. 3.314 km NNE of Challis, Idaho · 3869 days ago · 6 km deep · 31 km away · felt by 1
  9. 3.223 km WNW of Challis, Idaho · 3869 days ago · 7 km deep · 1 km away
  10. 1.823 km WNW of Challis, Idaho · 3872 days ago · 5 km deep · 1 km away
  11. 1.722 km WNW of Challis, Idaho · 3874 days ago · 7 km deep · 2 km away
  12. 2.223 km WNW of Challis, ID · 3874 days ago · 6 km deep · 1 km away
  13. 1.622 km W of Challis, Idaho · 3874 days ago · 5 km deep · 1 km away
  14. 1.914 km SE of Challis, Idaho · 3879 days ago · 7 km deep · 35 km away
  15. 1.512 km SE of Challis, Idaho · 3880 days ago · 6 km deep · 34 km away
  16. 1.810 km NW of Challis, Idaho · 3881 days ago · -1 km deep · 14 km away
  17. 1.920 km SE of Challis, Idaho · 3881 days ago · 3 km deep · 40 km away
  18. 1.512 km SE of Challis, Idaho · 3883 days ago · 6 km deep · 34 km away
  19. 2.212 km SE of Challis, Idaho · 3886 days ago · 8 km deep · 34 km away
  20. 1.813 km SE of Challis, Idaho · 3887 days ago · 7 km deep · 34 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80127744. Read Wed, Sep 30, 2026, 4:48 PM UTC.