M1.8 earthquake 6 km NW of Challis, Idaho

Magnitude

1.8 (ML, local (Richter)), micro

Magnitude from

Montana Bureau of Mines and Geology

Local time

Sun, Oct 29, 2017, 7:25 PM MDT

UTC

2017-10-30 01:25:13 UTC

Depth

6.2 km (3.9 mi), shallow

Epicenter

44.549° N, 114.281° W

Region

Idaho

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.3 km horizontally, 2.5 km in depth

Magnitude uncertainty

±0.33

Depth from

From location

Station coverage gap

107°

Stations used

7

• Challis, IdahoPopulation 1,043. Forecast6 kmNW
• Boise, IdahoPopulation 235,684. Forecast185 kmNE
• Calgary, CanadaPopulation 1,306,784. Forecast723 kmS

After

1. 2.025 km SE of Challis, IdahoMon, Oct 30, 6:14 PM MDT · 3260 days ago · 7 km deep · 32 km away
2. 1.722 km SSW of Clayton, IdahoWed, Nov 8, 8:27 PM MST · 3251 days ago · 9 km deep · 56 km away
3. 2.222 km SSW of Clayton, IdahoWed, Nov 8, 8:49 PM MST · 3251 days ago · 6 km deep · 56 km away
4. 2.422 km SSW of Clayton, IdahoThu, Nov 16, 1:37 PM MST · 3243 days ago · 10 km deep · 56 km away · felt by 4
5. 1.97 km SE of Yellow Pine, IdahoThu, Nov 23, 9:04 PM MST · 3236 days ago · 7 km deep · 99 km away
6. 1.620 km ENE of Challis, IdahoFri, Nov 24, 4:11 PM MST · 3235 days ago · 9 km deep · 22 km away
7. 2.411 km E of Yellow Pine, IdahoSat, Nov 25, 2:16 AM MST · 3235 days ago · 10 km deep · 96 km away
8. 2.110 km ENE of Yellow Pine, IdahoSun, Nov 26, 11:05 AM MST · 3234 days ago · 9 km deep · 100 km away
9. 1.622 km SSW of Clayton, IdahoSun, Nov 26, 10:42 PM MST · 3233 days ago · 7 km deep · 56 km away
10. 2.38 km E of Yellow Pine, IdahoMon, Nov 27, 4:16 PM MST · 3232 days ago · 13 km deep · 99 km away
11. 2.316 km S of Clayton, IdahoThu, Nov 30, 2:28 AM MST · 3230 days ago · 10 km deep · 49 km away
12. 1.822 km SSW of Clayton, IdahoFri, Dec 1, 4:34 AM MST · 3229 days ago · 8 km deep · 56 km away
13. 2.023 km SSW of Clayton, IdahoFri, Dec 1, 4:47 AM MST · 3229 days ago · 14 km deep · 57 km away
14. 2.021 km SSW of Clayton, IdahoFri, Dec 1, 6:14 AM MST · 3229 days ago · 6 km deep · 55 km away
15. 2.322 km SSW of Clayton, IdahoFri, Dec 1, 1:41 PM MST · 3228 days ago · 11 km deep · 56 km away
16. 1.822 km SSW of Clayton, IdahoFri, Dec 1, 1:49 PM MST · 3228 days ago · 6 km deep · 56 km away
17. 2.2southern IdahoSat, Dec 2, 6:11 PM MST · 3227 days ago · 10 km deep · 98 km away
18. 1.821 km E of Yellow Pine, IdahoSat, Dec 2, 7:56 PM MST · 3227 days ago · 17 km deep · 89 km away
19. 1.921 km SSW of Clayton, IdahoSun, Dec 3, 6:28 AM MST · 3227 days ago · 7 km deep · 55 km away
20. 2.122 km SSW of Clayton, IdahoSun, Dec 3, 4:30 PM MST · 3226 days ago · 13 km deep · 56 km away
21. 1.812 km SE of Challis, IdahoFri, Dec 8, 12:21 PM MST · 3221 days ago · 5 km deep · 19 km away
22. 2.110 km W of Clayton, IdahoSun, Dec 17, 11:51 PM MST · 3212 days ago · 10 km deep · 39 km away
23. 2.76 km WNW of Clayton, IdahoThu, Dec 21, 4:31 AM MST · 3209 days ago · 10 km deep · 33 km away · felt by 2
24. 1.824 km SSW of Clayton, IdahoThu, Dec 28, 12:14 AM MST · 3202 days ago · 8 km deep · 58 km away

Before

1. 1.714 km SE of Challis, IdahoTue, Oct 17, 2:29 AM MDT · 3274 days ago · 13 km deep · 21 km away
2. 2.732 km NNE of Lowman, IdahoSun, Oct 15, 8:13 AM MDT · 3276 days ago · 13 km deep · 96 km away · felt by 1
3. 1.913 km W of Clayton, IdahoSat, Oct 14, 11:59 PM MDT · 3276 days ago · 4 km deep · 39 km away
4. 1.614 km W of Clayton, IdahoFri, Oct 6, 4:45 AM MDT · 3285 days ago · 4 km deep · 40 km away

From the USGS Earthquake Hazards Program and its partner networks, event mb80267269. Read Sun, Oct 4, 2026, 6:50 AM UTC.