M1.8 earthquake 23 km WNW of Challis, Idaho

Magnitude

1.8 (ml), micro

Local time

Tue, Feb 23, 2016, 7:02 PM MST

UTC

2016-02-24 02:02:32 UTC

Depth

5.0 km (3.1 mi), shallow

Epicenter

44.546° N, 114.517° W

Region

Idaho

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 31.6 km in depth

Magnitude uncertainty

±0.17

Depth from

Operator assigned

Station coverage gap

138°

Stations used

7

• Challis, IdahoPopulation 1,043. Forecast23 kmWNW
• Boise, IdahoPopulation 235,684. Forecast170 kmNE
• Calgary, CanadaPopulation 1,306,784. Forecast724 kmS

After

1. 3.223 km WNW of Challis, IdahoFri, Feb 26, 12:15 AM MST · 3870 days ago · 7 km deep · 1 km away
2. 3.314 km NNE of Challis, IdahoFri, Feb 26, 12:39 AM MST · 3870 days ago · 6 km deep · 31 km away · felt by 1
3. 1.821 km W of Challis, IdahoFri, Feb 26, 1:56 AM MST · 3870 days ago · 3 km deep · 1 km away
4. 2.022 km WNW of Challis, IdahoFri, Feb 26, 2:16 AM MST · 3870 days ago · 7 km deep · 0 km away
5. 2.316 km NNE of Challis, IdahoFri, Feb 26, 11:53 PM MST · 3869 days ago · 6 km deep · 32 km away
6. 3.615 km NE of Challis, IdahoSat, Feb 27, 6:29 PM MST · 3868 days ago · 7 km deep · 32 km away · felt by 9
7. 1.722 km WNW of Challis, IdahoSat, Feb 27, 10:12 PM MST · 3868 days ago · 5 km deep · 1 km away
8. 2.114 km NE of Challis, IdahoSun, Feb 28, 4:07 AM MST · 3867 days ago · 5 km deep · 32 km away
9. 1.622 km WNW of Challis, IdahoSun, Feb 28, 12:05 PM MST · 3867 days ago · 4 km deep · 1 km away
10. 2.122 km W of Challis, IdahoMon, Feb 29, 5:43 AM MST · 3866 days ago · 5 km deep · 1 km away
11. 1.724 km WNW of Challis, IdahoMon, Feb 29, 5:53 AM MST · 3866 days ago · 8 km deep · 2 km away
12. 1.623 km W of Challis, IdahoMon, Feb 29, 7:11 AM MST · 3866 days ago · 2 km deep · 2 km away
13. 1.714 km NE of Challis, IdahoMon, Feb 29, 8:12 AM MST · 3866 days ago · -2 km deep · 33 km away
14. 2.223 km WNW of Challis, IdahoMon, Feb 29, 4:49 PM MST · 3866 days ago · 7 km deep · 1 km away
15. 2.013 km SE of Challis, IdahoTue, Mar 1, 3:18 AM MST · 3865 days ago · 5 km deep · 35 km away
16. 1.622 km WNW of Challis, IdahoTue, Mar 1, 4:27 AM MST · 3865 days ago · 7 km deep · 2 km away
17. 1.514 km W of Clayton, IdahoTue, Mar 1, 10:17 PM MST · 3865 days ago · 6 km deep · 33 km away
18. 2.523 km W of Challis, IdahoThu, Mar 3, 4:52 AM MST · 3863 days ago · 1 km deep · 1 km away
19. 1.714 km NE of Challis, IdahoFri, Mar 4, 1:10 PM MST · 3862 days ago · 5 km deep · 34 km away
20. 1.822 km W of Challis, IdahoMon, Mar 7, 4:19 PM MST · 3859 days ago · 4 km deep · 0 km away
21. 2.614 km NE of Challis, IdahoSat, Mar 12, 8:35 PM MST · 3854 days ago · 10 km deep · 32 km away
22. 1.8southern IdahoSun, Mar 13, 12:44 AM MST · 3854 days ago · 7 km deep · 18 km away
23. 1.525 km SE of Challis, IdahoSun, Mar 13, 7:24 AM MDT · 3853 days ago · 5 km deep · 47 km away
24. 2.2southern IdahoSun, Mar 13, 12:51 PM MDT · 3853 days ago · 9 km deep · 32 km away
25. 1.622 km WNW of Challis, IdahoWed, Mar 16, 7:23 AM MDT · 3850 days ago · 3 km deep · 1 km away
26. 1.917 km NNE of Challis, IdahoThu, Mar 17, 12:46 PM MDT · 3849 days ago · 5 km deep · 33 km away · felt by 1
27. 1.622 km WNW of Challis, IdahoSat, Mar 19, 2:26 PM MDT · 3847 days ago · 5 km deep · 1 km away
28. 1.510 km SE of Challis, IdahoThu, Mar 24, 1:59 AM MDT · 3843 days ago · 5 km deep · 33 km away
29. 1.629 km E of Clayton, IdahoSat, Mar 26, 11:40 AM MDT · 3840 days ago · 5 km deep · 52 km away
30. 1.722 km WNW of Challis, IdahoSat, Mar 26, 9:09 PM MDT · 3840 days ago · 6 km deep · 0 km away
31. 1.919 km NE of Challis, IdahoSun, Apr 3, 4:32 AM MDT · 3832 days ago · 7 km deep · 37 km away
32. 1.514 km NE of Challis, IdahoMon, Apr 18, 11:23 AM MDT · 3817 days ago · 6 km deep · 32 km away
33. 1.64 km NW of Challis, IdahoSat, Apr 23, 1:09 AM MDT · 3813 days ago · 7 km deep · 19 km away

Before

1. 1.722 km WNW of Challis, IdahoSun, Feb 21, 1:35 PM MST · 3874 days ago · 7 km deep · 2 km away
2. 2.223 km WNW of Challis, IDSun, Feb 21, 11:25 AM MST · 3874 days ago · 6 km deep · 0 km away
3. 1.622 km W of Challis, IdahoSun, Feb 21, 10:58 AM MST · 3874 days ago · 5 km deep · 0 km away
4. 1.914 km SE of Challis, IdahoTue, Feb 16, 12:45 PM MST · 3879 days ago · 7 km deep · 36 km away
5. 1.512 km SE of Challis, IdahoSun, Feb 14, 11:08 PM MST · 3881 days ago · 6 km deep · 35 km away
6. 1.810 km NW of Challis, IdahoSun, Feb 14, 10:13 AM MST · 3881 days ago · -1 km deep · 15 km away
7. 1.920 km SE of Challis, IdahoSun, Feb 14, 3:31 AM MST · 3881 days ago · 3 km deep · 41 km away
8. 1.512 km SE of Challis, IdahoFri, Feb 12, 9:30 PM MST · 3883 days ago · 6 km deep · 34 km away
9. 2.212 km SE of Challis, IdahoTue, Feb 9, 11:46 AM MST · 3886 days ago · 8 km deep · 35 km away
10. 1.813 km SE of Challis, IdahoMon, Feb 8, 6:41 PM MST · 3887 days ago · 7 km deep · 35 km away
11. 2.315 km W of Clayton, IdahoMon, Feb 8, 4:23 AM MST · 3887 days ago · 8 km deep · 32 km away
12. 1.822 km WNW of Challis, IdahoTue, Feb 2, 2:30 PM MST · 3893 days ago · 6 km deep · 1 km away
13. 1.622 km WNW of Challis, IdahoTue, Feb 2, 2:27 PM MST · 3893 days ago · 5 km deep · 1 km away
14. 1.819 km SE of Challis, IdahoTue, Feb 2, 12:17 PM MST · 3893 days ago · 2 km deep · 41 km away
15. 2.32 km NNW of Challis, IdahoSun, Jan 31, 6:38 PM MST · 3895 days ago · 8 km deep · 22 km away
16. 1.64 km NNW of Challis, IdahoSun, Jan 31, 11:43 AM MST · 3895 days ago · 5 km deep · 21 km away
17. 1.7southern IdahoSun, Jan 31, 3:49 AM MST · 3895 days ago · 1 km deep · 43 km away
18. 1.822 km SE of Challis, IdahoSat, Jan 30, 6:18 PM MST · 3896 days ago · 1 km deep · 43 km away
19. 1.614 km SE of Challis, IdahoSat, Jan 30, 1:06 PM MST · 3896 days ago · 5 km deep · 37 km away
20. 2.013 km NE of Challis, IdahoFri, Jan 29, 10:27 PM MST · 3897 days ago · 5 km deep · 32 km away

From the USGS Earthquake Hazards Program and its partner networks, event mb80126414. Read Wed, Sep 30, 2026, 8:51 PM UTC.