M2.0 earthquake 7 km ESE of Challis, Idaho

Magnitude

2.0 (ML, local (Richter)), micro

Magnitude from

Montana Bureau of Mines and Geology

Local time

Wed, Oct 21, 2015, 7:55 AM MDT

UTC

2015-10-21 13:55:10 UTC

Depth

9.2 km (5.7 mi), shallow

Epicenter

44.478° N, 114.139° W

Region

Idaho

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 2.1 km horizontally, 2.6 km in depth

Magnitude uncertainty

±0.19

Depth from

From location

Station coverage gap

86°

Stations used

11

• Challis, IdahoPopulation 1,043. Forecast8 kmESE
• Boise, IdahoPopulation 235,684. Forecast191 kmENE
• Calgary, CanadaPopulation 1,306,784. Forecast731 kmS

After

1. 2.510 km ESE of Challis, IdahoWed, Oct 21, 11:57 PM MDT · 4000 days ago · 11 km deep · 2 km away
2. 3.08 km ESE of Challis, IdahoThu, Oct 22, 3:52 PM MDT · 3999 days ago · 7 km deep · 1 km away · felt by 1
3. 2.711 km NNW of Challis, IdahoSun, Oct 25, 12:34 PM MDT · 3996 days ago · 4 km deep · 18 km away · felt by 1
4. 2.110 km NNE of Stanley, IdahoMon, Oct 26, 7:32 AM MDT · 3995 days ago · -1 km deep · 62 km away
5. 2.411 km NNE of Stanley, IdahoThu, Oct 29, 10:22 AM MDT · 3992 days ago · 8 km deep · 61 km away
6. 1.615 km SE of Challis, IdahoSat, Oct 31, 5:26 AM MDT · 3990 days ago · 6 km deep · 8 km away
7. 1.914 km SE of Challis, IdahoSat, Oct 31, 6:58 AM MDT · 3990 days ago · 9 km deep · 7 km away
8. 1.832 km N of Mackay, IdahoMon, Nov 2, 1:28 AM MST · 3988 days ago · 10 km deep · 49 km away
9. 1.65 km NNW of Challis, IdahoMon, Nov 2, 1:36 AM MST · 3988 days ago · -3 km deep · 13 km away
10. 1.810 km NNE of Stanley, IdahoSun, Nov 8, 7:01 AM MST · 3982 days ago · -1 km deep · 62 km away
11. 1.626 km SSW of Clayton, IdahoMon, Nov 9, 12:30 PM MST · 3981 days ago · 14 km deep · 57 km away
12. 1.823 km NNW of Challis, IdahoTue, Nov 10, 8:17 AM MST · 3980 days ago · -3 km deep · 29 km away
13. 2.021 km NNW of Challis, IdahoSat, Nov 14, 8:10 AM MST · 3976 days ago · 4 km deep · 27 km away
14. 2.413 km ESE of Challis, IdahoMon, Nov 16, 7:02 PM MST · 3974 days ago · 11 km deep · 6 km away
15. 2.013 km SE of Challis, IdahoSat, Nov 21, 7:52 PM MST · 3969 days ago · 7 km deep · 6 km away
16. 1.611 km SE of Challis, IdahoSun, Nov 22, 6:09 AM MST · 3968 days ago · 4 km deep · 4 km away
17. 1.911 km ESE of Challis, IdahoSat, Nov 28, 5:44 AM MST · 3962 days ago · 7 km deep · 4 km away
18. 1.69 km NNW of Challis, IdahoTue, Dec 1, 1:04 AM MST · 3959 days ago · 5 km deep · 17 km away
19. 1.919 km NW of Stanley, IdahoThu, Dec 3, 1:44 AM MST · 3957 days ago · 20 km deep · 78 km away
20. 1.7southern IdahoFri, Dec 4, 8:48 AM MST · 3956 days ago · 3 km deep · 17 km away
21. 1.612 km SE of Challis, IdahoMon, Dec 7, 4:52 AM MST · 3953 days ago · 5 km deep · 6 km away
22. 1.53 km NNW of Challis, IdahoTue, Dec 8, 3:30 PM MST · 3952 days ago · 6 km deep · 10 km away
23. 1.64 km NNW of Challis, IdahoTue, Dec 8, 3:38 PM MST · 3952 days ago · 3 km deep · 12 km away
24. 2.46 km NNW of Challis, IdahoTue, Dec 8, 3:43 PM MST · 3952 days ago · 5 km deep · 13 km away
25. 1.84 km NNW of Challis, IdahoTue, Dec 8, 3:50 PM MST · 3952 days ago · 4 km deep · 12 km away
26. 2.66 km NW of Challis, IdahoTue, Dec 8, 3:52 PM MST · 3952 days ago · 5 km deep · 14 km away
27. 2.16 km NNW of Challis, IdahoTue, Dec 8, 3:57 PM MST · 3952 days ago · 5 km deep · 14 km away
28. 2.76 km NW of Challis, IdahoTue, Dec 8, 4:07 PM MST · 3952 days ago · 5 km deep · 14 km away · felt by 1
29. 1.7southern IdahoTue, Dec 8, 4:16 PM MST · 3952 days ago · 1 km deep · 11 km away
30. 1.54 km NNW of Challis, IdahoTue, Dec 8, 4:35 PM MST · 3952 days ago · 1 km deep · 11 km away
31. 2.4southern IdahoTue, Dec 8, 4:36 PM MST · 3952 days ago · 6 km deep · 13 km away
32. 1.82 km NNW of Challis, IdahoTue, Dec 8, 4:50 PM MST · 3952 days ago · 5 km deep · 10 km away
33. 1.62 km NNW of Challis, IdahoTue, Dec 8, 4:58 PM MST · 3952 days ago · 5 km deep · 10 km away
34. 1.93 km NNW of Challis, IdahoTue, Dec 8, 5:43 PM MST · 3952 days ago · 6 km deep · 11 km away
35. 1.71 km NNW of Challis, IdahoTue, Dec 8, 5:44 PM MST · 3952 days ago · 5 km deep · 9 km away
36. 1.82 km NW of Challis, IdahoTue, Dec 8, 6:46 PM MST · 3952 days ago · 5 km deep · 10 km away
37. 2.76 km NNW of Challis, IdahoTue, Dec 8, 8:43 PM MST · 3952 days ago · 5 km deep · 13 km away
38. 1.86 km NNW of Challis, IdahoTue, Dec 8, 9:36 PM MST · 3952 days ago · 3 km deep · 13 km away
39. 2.06 km NNW of Challis, IdahoTue, Dec 8, 9:55 PM MST · 3952 days ago · 5 km deep · 13 km away
40. 1.95 km NNW of Challis, IdahoTue, Dec 8, 10:51 PM MST · 3952 days ago · 5 km deep · 13 km away
41. 2.55 km NNW of Challis, IdahoTue, Dec 8, 11:38 PM MST · 3952 days ago · 7 km deep · 13 km away
42. 1.92 km N of Challis, IdahoWed, Dec 9, 12:33 AM MST · 3951 days ago · 6 km deep · 10 km away
43. 1.84 km NNW of Challis, IdahoWed, Dec 9, 1:39 AM MST · 3951 days ago · 5 km deep · 11 km away
44. 1.62 km NNW of Challis, IdahoWed, Dec 9, 4:29 AM MST · 3951 days ago · 5 km deep · 10 km away
45. 1.96 km NNW of Challis, IdahoWed, Dec 9, 12:45 PM MST · 3951 days ago · 5 km deep · 13 km away
46. 1.83 km NW of Challis, IdahoWed, Dec 9, 4:56 PM MST · 3951 days ago · 8 km deep · 11 km away
47. 1.822 km SE of Challis, IdahoWed, Dec 9, 8:02 PM MST · 3951 days ago · 6 km deep · 15 km away
48. 1.63 km NNW of Challis, IdahoThu, Dec 10, 12:59 AM MST · 3950 days ago · 4 km deep · 10 km away
49. 1.735 km NW of Mackay, IdahoThu, Dec 10, 2:29 AM MST · 3950 days ago · 5 km deep · 42 km away
50. 2.25 km NNW of Challis, IdahoThu, Dec 10, 12:03 PM MST · 3950 days ago · 6 km deep · 13 km away
51. 1.72 km NNW of Challis, IdahoThu, Dec 10, 12:09 PM MST · 3950 days ago · 6 km deep · 9 km away
52. 1.93 km NNW of Challis, IdahoThu, Dec 10, 12:19 PM MST · 3950 days ago · 5 km deep · 10 km away
53. 1.63 km N of Challis, IdahoThu, Dec 10, 1:35 PM MST · 3950 days ago · 5 km deep · 10 km away
54. 2.03 km NNW of Challis, IdahoThu, Dec 10, 2:26 PM MST · 3950 days ago · 9 km deep · 10 km away
55. 3.37 km NNW of Challis, IdahoThu, Dec 10, 2:54 PM MST · 3950 days ago · 6 km deep · 14 km away · felt by 1
56. 2.55 km NNW of Challis, IdahoThu, Dec 10, 3:02 PM MST · 3950 days ago · 8 km deep · 13 km away · felt by 1
57. 1.71 km NNE of Challis, IdahoThu, Dec 10, 3:23 PM MST · 3950 days ago · 9 km deep · 8 km away
58. 2.26 km NNW of Challis, IdahoThu, Dec 10, 3:52 PM MST · 3950 days ago · 4 km deep · 13 km away
59. 2.76 km NW of Challis, IdahoThu, Dec 10, 6:50 PM MST · 3950 days ago · 7 km deep · 13 km away
60. 3.55 km NW of Challis, IdahoThu, Dec 10, 6:51 PM MST · 3950 days ago · 7 km deep · 13 km away · felt by 4

The first 60 of 82.

Before

1. 2.5southern IdahoMon, Oct 19, 1:46 PM MDT · 4002 days ago · 4 km deep · 8 km away
2. 1.722 km ESE of Challis, IdahoMon, Oct 19, 1:45 PM MDT · 4002 days ago · 9 km deep · 14 km away
3. 2.113 km SE of Challis, IdahoMon, Oct 19, 11:31 AM MDT · 4002 days ago · 10 km deep · 6 km away
4. 1.632 km ESE of Clayton, IdahoTue, Oct 13, 9:27 AM MDT · 4008 days ago · 4 km deep · 34 km away
5. 1.814 km SE of Challis, IdahoSun, Oct 11, 4:14 PM MDT · 4010 days ago · 11 km deep · 8 km away
6. 1.929 km N of Sun Valley, IdahoSat, Oct 10, 7:28 PM MDT · 4011 days ago · 10 km deep · 61 km away
7. 2.014 km SE of Challis, IdahoSat, Oct 10, 2:21 AM MDT · 4011 days ago · 10 km deep · 8 km away · felt by 1
8. 1.94 km NNW of Challis, IdahoThu, Oct 8, 11:46 AM MDT · 4013 days ago · -1 km deep · 12 km away
9. 1.522 km WNW of Clayton, IdahoThu, Oct 8, 10:38 AM MDT · 4013 days ago · 4 km deep · 43 km away
10. 2.122 km WNW of Clayton, IdahoThu, Oct 8, 6:03 AM MDT · 4013 days ago · 7 km deep · 43 km away
11. 2.011 km SE of Challis, IdahoSun, Oct 4, 9:42 AM MDT · 4017 days ago · 6 km deep · 4 km away
12. 1.629 km N of Sun Valley, IdahoThu, Oct 1, 3:47 PM MDT · 4020 days ago · 7 km deep · 61 km away
13. 1.64 km NNW of Challis, IdahoTue, Sep 22, 4:50 AM MDT · 4029 days ago · 8 km deep · 12 km away
14. 1.8southern IdahoMon, Sep 21, 4:54 PM MDT · 4030 days ago · 10 km deep · 12 km away

From the USGS Earthquake Hazards Program and its partner networks, event mb80102919. Read Sat, Oct 3, 2026, 6:35 PM UTC.