M2.4 earthquake 11 km SE of Challis, Idaho

Magnitude

2.4 (ML, local (Richter)), micro

Magnitude from

Montana Bureau of Mines and Geology

Local time

Mon, Sep 7, 2015, 1:45 PM MDT

UTC

2015-09-07 19:45:45 UTC

Depth

10.8 km (6.7 mi), shallow

Epicenter

44.448° N, 114.115° W

Region

Idaho

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.2 km horizontally, 1.7 km in depth

Magnitude uncertainty

±0.11

Depth from

From location

Station coverage gap

62°

Stations used

15

• Challis, IdahoPopulation 1,043. Forecast11 kmSE
• Boise, IdahoPopulation 235,684. Forecast191 kmENE
• Calgary, CanadaPopulation 1,306,784. Forecast734 kmS

After

1. 2.524 km SE of Challis, IdahoWed, Sep 9, 1:02 AM MDT · 4042 days ago · 10 km deep · 14 km away
2. 2.524 km NW of Clayton, IdahoThu, Sep 10, 3:22 PM MDT · 4040 days ago · 8 km deep · 44 km away
3. 1.913 km SE of Challis, IdahoMon, Sep 14, 4:36 AM MDT · 4037 days ago · 13 km deep · 3 km away
4. 2.030 km E of Clayton, IdahoWed, Sep 16, 4:15 PM MDT · 4034 days ago · 5 km deep · 26 km away
5. 3.310 km SE of Challis, IdahoThu, Sep 17, 8:02 PM MDT · 4033 days ago · 10 km deep · 1 km away · felt by 4
6. 2.013 km W of Clayton, IdahoSat, Sep 19, 7:40 AM MDT · 4032 days ago · 9 km deep · 42 km away
7. 1.513 km W of Clayton, IdahoSat, Sep 19, 1:56 PM MDT · 4031 days ago · 10 km deep · 43 km away
8. 1.914 km W of Clayton, IdahoMon, Sep 21, 3:51 AM MDT · 4030 days ago · 6 km deep · 42 km away
9. 2.826 km W of Challis, IdahoMon, Sep 21, 7:18 AM MDT · 4030 days ago · 5 km deep · 37 km away
10. 1.8southern IdahoMon, Sep 21, 4:54 PM MDT · 4029 days ago · 10 km deep · 16 km away
11. 1.64 km NNW of Challis, IdahoTue, Sep 22, 4:50 AM MDT · 4029 days ago · 8 km deep · 16 km away
12. 1.629 km N of Sun Valley, IdahoThu, Oct 1, 3:47 PM MDT · 4019 days ago · 7 km deep · 58 km away
13. 2.011 km SE of Challis, IdahoSun, Oct 4, 9:42 AM MDT · 4017 days ago · 6 km deep · 0 km away
14. 2.122 km WNW of Clayton, IdahoThu, Oct 8, 6:03 AM MDT · 4013 days ago · 7 km deep · 43 km away
15. 1.522 km WNW of Clayton, IdahoThu, Oct 8, 10:38 AM MDT · 4012 days ago · 4 km deep · 44 km away
16. 1.94 km NNW of Challis, IdahoThu, Oct 8, 11:46 AM MDT · 4012 days ago · -1 km deep · 15 km away
17. 2.014 km SE of Challis, IdahoSat, Oct 10, 2:21 AM MDT · 4011 days ago · 10 km deep · 4 km away · felt by 1
18. 1.929 km N of Sun Valley, IdahoSat, Oct 10, 7:28 PM MDT · 4010 days ago · 10 km deep · 59 km away
19. 1.814 km SE of Challis, IdahoSun, Oct 11, 4:14 PM MDT · 4009 days ago · 11 km deep · 4 km away
20. 1.632 km ESE of Clayton, IdahoTue, Oct 13, 9:27 AM MDT · 4008 days ago · 4 km deep · 30 km away
21. 2.113 km SE of Challis, IdahoMon, Oct 19, 11:31 AM MDT · 4001 days ago · 10 km deep · 2 km away
22. 1.722 km ESE of Challis, IdahoMon, Oct 19, 1:45 PM MDT · 4001 days ago · 9 km deep · 11 km away
23. 2.5southern IdahoMon, Oct 19, 1:46 PM MDT · 4001 days ago · 4 km deep · 5 km away
24. 2.07 km ESE of Challis, IdahoWed, Oct 21, 7:55 AM MDT · 4000 days ago · 9 km deep · 4 km away
25. 2.510 km ESE of Challis, IdahoWed, Oct 21, 11:57 PM MDT · 3999 days ago · 11 km deep · 2 km away
26. 3.08 km ESE of Challis, IdahoThu, Oct 22, 3:52 PM MDT · 3998 days ago · 7 km deep · 3 km away · felt by 1
27. 2.711 km NNW of Challis, IdahoSun, Oct 25, 12:34 PM MDT · 3995 days ago · 4 km deep · 22 km away · felt by 1
28. 2.110 km NNE of Stanley, IdahoMon, Oct 26, 7:32 AM MDT · 3995 days ago · -1 km deep · 63 km away
29. 2.411 km NNE of Stanley, IdahoThu, Oct 29, 10:22 AM MDT · 3991 days ago · 8 km deep · 62 km away
30. 1.615 km SE of Challis, IdahoSat, Oct 31, 5:26 AM MDT · 3990 days ago · 6 km deep · 4 km away
31. 1.914 km SE of Challis, IdahoSat, Oct 31, 6:58 AM MDT · 3990 days ago · 9 km deep · 3 km away
32. 1.832 km N of Mackay, IdahoMon, Nov 2, 1:28 AM MST · 3988 days ago · 10 km deep · 45 km away
33. 1.65 km NNW of Challis, IdahoMon, Nov 2, 1:36 AM MST · 3988 days ago · -3 km deep · 16 km away

Before

1. 1.912 km ESE of Challis, IdahoSun, Sep 6, 6:09 PM MDT · 4044 days ago · 4 km deep · 2 km away
2. 1.515 km SE of Challis, IdahoWed, Sep 2, 3:24 AM MDT · 4049 days ago · 7 km deep · 5 km away
3. 1.636 km SSW of Salmon, IdahoWed, Sep 2, 1:06 AM MDT · 4049 days ago · 10 km deep · 50 km away
4. 1.913 km SE of Challis, IdahoWed, Sep 2, 12:00 AM MDT · 4049 days ago · 9 km deep · 3 km away
5. 2.615 km SE of Challis, IdahoTue, Sep 1, 8:51 PM MDT · 4049 days ago · 5 km deep · 5 km away
6. 2.712 km SE of Challis, IdahoTue, Sep 1, 8:48 PM MDT · 4049 days ago · 6 km deep · 2 km away
7. 2.315 km SE of Challis, IdahoTue, Sep 1, 4:05 PM MDT · 4049 days ago · 7 km deep · 4 km away
8. 2.711 km SE of Challis, IdahoTue, Sep 1, 7:16 AM MDT · 4050 days ago · 5 km deep · 2 km away · felt by 1
9. 2.339 km NNW of Challis, IdahoSun, Aug 23, 4:41 PM MDT · 4058 days ago · 15 km deep · 50 km away
10. 1.910 km SE of Challis, IdahoSat, Aug 22, 5:03 PM MDT · 4059 days ago · 11 km deep · 1 km away
11. 2.15 km NNW of Challis, IdahoFri, Aug 21, 10:19 AM MDT · 4060 days ago · 11 km deep · 16 km away
12. 2.121 km E of Challis, IdahoThu, Aug 20, 4:11 PM MDT · 4061 days ago · 13 km deep · 12 km away
13. 1.68 km NE of Stanley, IdahoTue, Aug 18, 6:59 AM MDT · 4064 days ago · 6 km deep · 63 km away
14. 2.09 km NNE of Stanley, IdahoTue, Aug 18, 4:48 AM MDT · 4064 days ago · 13 km deep · 63 km away
15. 1.87 km NW of Challis, IdahoMon, Aug 17, 6:12 AM MDT · 4065 days ago · 6 km deep · 19 km away
16. 1.96 km NW of Challis, IdahoSun, Aug 16, 2:59 PM MDT · 4065 days ago · 4 km deep · 18 km away
17. 1.630 km WNW of Mackay, IdahoSat, Aug 15, 12:26 AM MDT · 4067 days ago · 12 km deep · 46 km away

From the USGS Earthquake Hazards Program and its partner networks, event mb80096929. Read Sat, Oct 3, 2026, 3:43 AM UTC.