M1.8 earthquake 47 km SE of Mammoth, Wyoming

Magnitude

1.8 (Md, duration), micro

Magnitude from

University of Utah Seismograph Stations

Local time

Thu, Nov 8, 2018, 11:12 PM MST

UTC

2018-11-09 06:12:36 UTC

Depth

2.2 km (1.4 mi), shallow

Epicenter

44.627° N, 110.365° W

Region

Montana

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 31.6 km in depth

Magnitude uncertainty

±0.09

Depth from

Operator assigned

Station coverage gap

76°

Stations used

10

• Gardiner, MontanaPopulation 875. Forecast52 kmSSE
• Bozeman, MontanaPopulation 43,405. Forecast128 kmSSE
• Billings, MontanaPopulation 117,116. Forecast194 kmSW
• Calgary, CanadaPopulation 1,306,784. Forecast766 kmSSE

After

1. 1.611 km NNE of West Yellowstone, MontanaMon, Nov 12, 3:25 AM MST · 2881 days ago · 7 km deep · 54 km away
2. 1.83 km SSE of Hebgen Lake Estates, MontanaTue, Nov 20, 2:03 AM MST · 2874 days ago · 12 km deep · 65 km away
3. 1.622 km SSW of Mammoth, WyomingWed, Nov 21, 5:13 PM MST · 2872 days ago · 5 km deep · 39 km away
4. 2.124 km SSW of Mammoth, WyomingFri, Nov 23, 7:18 AM MST · 2870 days ago · 5 km deep · 38 km away
5. 2.325 km SSW of Mammoth, WyomingFri, Nov 23, 9:25 AM MST · 2870 days ago · 5 km deep · 37 km away
6. 1.924 km SSW of Mammoth, WyomingFri, Nov 23, 9:31 AM MST · 2870 days ago · 5 km deep · 37 km away
7. 1.623 km SSW of Mammoth, WyomingFri, Nov 23, 8:12 PM MST · 2870 days ago · 4 km deep · 37 km away
8. 1.648 km ESE of West Yellowstone, MontanaTue, Nov 27, 4:47 AM MST · 2866 days ago · 2 km deep · 22 km away
9. 1.722 km SSW of Mammoth, WyomingSat, Dec 8, 12:19 AM MST · 2856 days ago · 5 km deep · 42 km away
10. 1.746 km SE of Mammoth, WyomingMon, Dec 10, 2:30 AM MST · 2853 days ago · 4 km deep · 1 km away
11. 2.345 km SSE of Mammoth, WyomingThu, Dec 13, 11:54 PM MST · 2850 days ago · 5 km deep · 6 km away
12. 1.549 km ESE of West Yellowstone, MontanaFri, Dec 14, 4:49 AM MST · 2849 days ago · 2 km deep · 23 km away
13. 1.947 km ESE of West Yellowstone, MontanaTue, Dec 18, 3:40 AM MST · 2845 days ago · 4 km deep · 22 km away · felt by 1
14. 2.37 km N of West Yellowstone, MontanaTue, Dec 18, 12:06 PM MST · 2845 days ago · 12 km deep · 60 km away
15. 3.121 km W of Hebgen Lake Estates, MontanaThu, Dec 20, 9:36 AM MST · 2843 days ago · 16 km deep · 88 km away · felt by 1
16. 1.617 km NE of West Yellowstone, MontanaSun, Dec 23, 2:51 AM MST · 2840 days ago · 9 km deep · 47 km away
17. 1.817 km ESE of West Yellowstone, MontanaSun, Dec 23, 6:04 PM MST · 2840 days ago · 5 km deep · 42 km away
18. 1.6WyomingSun, Dec 23, 11:20 PM MST · 2840 days ago · 6 km deep · 42 km away
19. 1.612 km NE of West Yellowstone, MontanaMon, Dec 24, 11:14 AM MST · 2839 days ago · 7 km deep · 51 km away · felt by 1
20. 2.210 km NE of West Yellowstone, MontanaMon, Dec 24, 4:31 PM MST · 2839 days ago · 8 km deep · 54 km away
21. 1.6WyomingMon, Dec 31, 12:10 AM MST · 2833 days ago · 5 km deep · 12 km away
22. 1.747 km SSE of Mammoth, WyomingMon, Dec 31, 12:11 AM MST · 2833 days ago · 6 km deep · 11 km away
23. 1.747 km SSE of Mammoth, WyomingMon, Dec 31, 12:19 AM MST · 2833 days ago · 6 km deep · 12 km away
24. 1.847 km SSE of Mammoth, WyomingMon, Dec 31, 12:23 AM MST · 2833 days ago · 5 km deep · 12 km away
25. 2.747 km SSE of Mammoth, WyomingMon, Dec 31, 12:25 AM MST · 2833 days ago · 5 km deep · 12 km away · felt by 2
26. 1.748 km SSE of Mammoth, WyomingMon, Dec 31, 12:26 AM MST · 2833 days ago · 6 km deep · 12 km away
27. 1.747 km SSE of Mammoth, WyomingMon, Dec 31, 12:27 AM MST · 2833 days ago · 3 km deep · 13 km away
28. 1.647 km SSE of Mammoth, WyomingMon, Dec 31, 12:28 AM MST · 2833 days ago · 2 km deep · 13 km away
29. 2.247 km SSE of Mammoth, WyomingMon, Dec 31, 12:28 AM MST · 2833 days ago · 4 km deep · 12 km away
30. 2.048 km SSE of Mammoth, WyomingMon, Dec 31, 12:29 AM MST · 2833 days ago · 2 km deep · 13 km away
31. 2.047 km SSE of Mammoth, WyomingMon, Dec 31, 12:30 AM MST · 2833 days ago · 5 km deep · 12 km away
32. 1.948 km SSE of Mammoth, WyomingMon, Dec 31, 12:30 AM MST · 2833 days ago · 2 km deep · 13 km away
33. 2.347 km SSE of Mammoth, WyomingMon, Dec 31, 12:31 AM MST · 2833 days ago · 5 km deep · 12 km away
34. 1.648 km SSE of Mammoth, WyomingMon, Dec 31, 12:48 AM MST · 2833 days ago · 6 km deep · 11 km away
35. 2.448 km SSE of Mammoth, WyomingMon, Dec 31, 2:57 AM MST · 2832 days ago · 5 km deep · 11 km away
36. 2.047 km SSE of Mammoth, WyomingMon, Dec 31, 3:00 AM MST · 2832 days ago · 5 km deep · 11 km away
37. 2.047 km SSE of Mammoth, WyomingMon, Dec 31, 3:08 AM MST · 2832 days ago · 6 km deep · 11 km away
38. 1.6WyomingMon, Dec 31, 3:14 AM MST · 2832 days ago · 4 km deep · 12 km away
39. 1.548 km SSE of Mammoth, WyomingMon, Dec 31, 3:16 AM MST · 2832 days ago · 5 km deep · 11 km away
40. 1.749 km SSE of Mammoth, WyomingMon, Dec 31, 3:16 AM MST · 2832 days ago · 16 km deep · 7 km away
41. 2.647 km SSE of Mammoth, WyomingMon, Dec 31, 3:21 AM MST · 2832 days ago · 5 km deep · 11 km away
42. 2.848 km SSE of Mammoth, WyomingMon, Dec 31, 3:21 AM MST · 2832 days ago · 3 km deep · 12 km away · felt by 1
43. 1.648 km SSE of Mammoth, WyomingMon, Dec 31, 3:50 AM MST · 2832 days ago · 5 km deep · 11 km away
44. 1.812 km E of Hebgen Lake Estates, MontanaWed, Jan 2, 7:58 PM MST · 2830 days ago · 9 km deep · 55 km away
45. 1.938 km SSE of Mammoth, WyomingFri, Jan 4, 2:42 PM MST · 2828 days ago · 5 km deep · 10 km away
46. 2.434 km SW of Silver Gate, MontanaSat, Jan 5, 10:35 PM MST · 2827 days ago · 9 km deep · 17 km away · felt by 1
47. 2.033 km SW of Silver Gate, MontanaSat, Jan 5, 10:36 PM MST · 2827 days ago · 8 km deep · 18 km away
48. 2.334 km SW of Silver Gate, MontanaSat, Jan 5, 10:38 PM MST · 2827 days ago · 8 km deep · 17 km away
49. 2.834 km SW of Silver Gate, MontanaSat, Jan 5, 10:38 PM MST · 2827 days ago · 9 km deep · 17 km away · felt by 1
50. 2.636 km SW of Silver Gate, MontanaSat, Jan 5, 10:39 PM MST · 2827 days ago · 2 km deep · 16 km away
51. 2.634 km SW of Silver Gate, MontanaSat, Jan 5, 10:39 PM MST · 2827 days ago · 7 km deep · 17 km away
52. 2.830 km SW of Silver Gate, MontanaSat, Jan 5, 10:39 PM MST · 2827 days ago · 6 km deep · 21 km away
53. 1.739 km SSE of Mammoth, WyomingMon, Jan 7, 12:15 AM MST · 2826 days ago · 3 km deep · 8 km away

Before

1. 1.63 km ENE of Hebgen Lake Estates, MontanaThu, Nov 8, 2:47 AM MST · 2885 days ago · 11 km deep · 65 km away
2. 2.47 km ENE of Hebgen Lake Estates, MontanaSun, Nov 4, 10:11 AM MST · 2889 days ago · 11 km deep · 61 km away
3. 1.87 km ENE of Hebgen Lake Estates, MontanaSun, Nov 4, 9:58 AM MST · 2889 days ago · 11 km deep · 62 km away
4. 2.08 km ENE of Hebgen Lake Estates, MontanaSun, Nov 4, 9:46 AM MST · 2889 days ago · 10 km deep · 61 km away
5. 1.78 km ENE of Hebgen Lake Estates, MontanaSun, Nov 4, 9:46 AM MST · 2889 days ago · 10 km deep · 61 km away
6. 1.67 km ENE of Hebgen Lake Estates, MontanaSun, Nov 4, 9:14 AM MST · 2889 days ago · 9 km deep · 61 km away
7. 1.88 km ENE of Hebgen Lake Estates, MontanaSun, Nov 4, 9:13 AM MST · 2889 days ago · 9 km deep · 60 km away
8. 1.58 km ENE of Hebgen Lake Estates, MontanaSun, Nov 4, 9:07 AM MST · 2889 days ago · 10 km deep · 61 km away
9. 1.97 km ENE of Hebgen Lake Estates, MontanaSun, Nov 4, 8:54 AM MST · 2889 days ago · 12 km deep · 61 km away
10. 2.026 km ESE of West Yellowstone, MontanaTue, Oct 30, 6:35 PM MDT · 2894 days ago · 9 km deep · 33 km away
11. 1.646 km SE of West Yellowstone, MontanaWed, Oct 24, 4:56 PM MDT · 2900 days ago · 3 km deep · 38 km away
12. 2.123 km SW of Mammoth, WyomingMon, Oct 22, 4:20 PM MDT · 2902 days ago · 5 km deep · 45 km away
13. 2.772 km ESE of West Yellowstone, MontanaSun, Oct 21, 3:07 PM MDT · 2903 days ago · 10 km deep · 32 km away · felt by 1
14. 1.518 km NE of West Yellowstone, MontanaFri, Oct 19, 6:57 PM MDT · 2905 days ago · 9 km deep · 48 km away
15. 1.818 km NE of West Yellowstone, MontanaFri, Oct 19, 6:43 PM MDT · 2905 days ago · 9 km deep · 48 km away
16. 2.212 km NNE of West Yellowstone, MontanaTue, Oct 16, 2:37 AM MDT · 2909 days ago · 9 km deep · 55 km away
17. 2.011 km NNE of West Yellowstone, MontanaMon, Oct 15, 1:45 PM MDT · 2909 days ago · 7 km deep · 55 km away
18. 2.610 km NNE of West Yellowstone, MontanaSat, Oct 13, 7:52 AM MDT · 2911 days ago · 7 km deep · 55 km away
19. 1.745 km ENE of Warm River, IdahoWed, Oct 10, 2:52 PM MDT · 2914 days ago · 6 km deep · 52 km away

From the USGS Earthquake Hazards Program and its partner networks, event uu60303977. Read Fri, Oct 2, 2026, 8:44 PM UTC.