M1.7 earthquake 20 km SSW of Mammoth, Wyoming

Magnitude

1.7 (ML, local (Richter)), micro

Magnitude from

University of Utah Seismograph Stations

Local time

Thu, Jan 2, 2020, 11:33 AM MST

UTC

2020-01-02 18:33:23 UTC

Depth

8.2 km (5.1 mi), shallow

Epicenter

44.804° N, 110.795° W

Region

Montana

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 0.9 km in depth

Magnitude uncertainty

±0.29

Depth from

From location

Station coverage gap

57°

Stations used

22

• Gardiner, MontanaPopulation 875. Forecast26 kmSSW
• Bozeman, MontanaPopulation 43,405. Forecast99 kmS
• Billings, MontanaPopulation 117,116. Forecast210 kmWSW
• Calgary, CanadaPopulation 1,306,784. Forecast736 kmSSE

After

1. 1.558 km SSE of Mammoth, WyomingSun, Jan 5, 7:36 AM MST · 2465 days ago · 4 km deep · 48 km away
2. 2.127 km S of Mammoth, WyomingMon, Jan 6, 3:03 PM MST · 2464 days ago · 2 km deep · 13 km away
3. 1.622 km SE of Mammoth, WyomingTue, Jan 7, 8:03 PM MST · 2462 days ago · 4 km deep · 25 km away
4. 2.030 km SSE of Virginia City, MontanaWed, Jan 8, 9:57 AM MST · 2462 days ago · 12 km deep · 80 km away
5. 2.1WyomingFri, Jan 10, 1:05 PM MST · 2460 days ago · 14 km deep · 65 km away
6. 2.836 km S of Silver Gate, MontanaFri, Jan 10, 3:57 PM MST · 2460 days ago · 14 km deep · 65 km away · felt by 1
7. 2.18 km ESE of Hebgen Lake Estates, MontanaSat, Jan 18, 11:14 PM MST · 2451 days ago · 12 km deep · 24 km away
8. 1.646 km SE of Mammoth, WyomingTue, Jan 28, 9:33 AM MST · 2442 days ago · 5 km deep · 39 km away
9. 1.550 km ESE of West Yellowstone, MontanaSat, Feb 1, 2:14 PM MST · 2438 days ago · 4 km deep · 40 km away
10. 1.720 km S of Mammoth, WyomingThu, Feb 6, 2:18 AM MST · 2433 days ago · 4 km deep · 9 km away
11. 1.722 km S of Mammoth, WyomingThu, Feb 6, 2:24 AM MST · 2433 days ago · 5 km deep · 9 km away
12. 1.621 km S of Mammoth, WyomingThu, Feb 6, 3:44 AM MST · 2433 days ago · 2 km deep · 9 km away
13. 1.740 km SSE of Mammoth, WyomingThu, Feb 6, 5:15 PM MST · 2433 days ago · 6 km deep · 32 km away
14. 1.952 km SSE of Mammoth, WyomingMon, Feb 10, 5:57 AM MST · 2429 days ago · 4 km deep · 43 km away
15. 1.952 km SSE of Mammoth, WyomingMon, Feb 10, 5:59 AM MST · 2429 days ago · 3 km deep · 43 km away
16. 2.452 km SSE of Mammoth, WyomingMon, Feb 10, 6:14 AM MST · 2429 days ago · 4 km deep · 43 km away
17. 1.632 km ESE of West Yellowstone, MontanaTue, Feb 11, 2:14 AM MST · 2428 days ago · 5 km deep · 27 km away
18. 1.846 km ENE of Warm River, IdahoTue, Feb 11, 8:07 PM MST · 2427 days ago · 4 km deep · 63 km away
19. 2.046 km ENE of Warm River, IdahoTue, Feb 11, 8:12 PM MST · 2427 days ago · 4 km deep · 63 km away
20. 2.246 km ENE of Warm River, IdahoTue, Feb 11, 8:18 PM MST · 2427 days ago · 5 km deep · 64 km away
21. 2.146 km ENE of Warm River, IdahoTue, Feb 11, 8:28 PM MST · 2427 days ago · 3 km deep · 63 km away
22. 1.846 km ENE of Warm River, IdahoTue, Feb 11, 8:30 PM MST · 2427 days ago · 3 km deep · 63 km away
23. 2.046 km ENE of Warm River, IdahoTue, Feb 11, 9:45 PM MST · 2427 days ago · 3 km deep · 61 km away
24. 2.346 km ENE of Warm River, IdahoTue, Feb 11, 10:15 PM MST · 2427 days ago · 3 km deep · 62 km away
25. 1.945 km ENE of Warm River, IdahoTue, Feb 11, 10:15 PM MST · 2427 days ago · 2 km deep · 61 km away
26. 1.560 km SE of West Yellowstone, MontanaFri, Feb 14, 12:17 PM MST · 2425 days ago · 8 km deep · 59 km away
27. 2.026 km ENE of West Yellowstone, MontanaTue, Feb 18, 7:24 PM MST · 2420 days ago · 5 km deep · 7 km away
28. 1.842 km NE of Spencer, IdahoTue, Feb 18, 8:10 PM MST · 2420 days ago · 11 km deep · 87 km away
29. 1.626 km ENE of West Yellowstone, MontanaTue, Feb 18, 8:23 PM MST · 2420 days ago · 5 km deep · 7 km away
30. 2.126 km ENE of West Yellowstone, MontanaThu, Feb 20, 5:14 AM MST · 2419 days ago · 6 km deep · 8 km away
31. 1.826 km ENE of West Yellowstone, MontanaThu, Feb 20, 6:27 AM MST · 2419 days ago · 5 km deep · 7 km away
32. 1.726 km ENE of West Yellowstone, MontanaSun, Feb 23, 9:44 PM MST · 2415 days ago · 5 km deep · 7 km away
33. 1.615 km E of West Yellowstone, MontanaMon, Feb 24, 11:48 AM MST · 2415 days ago · 11 km deep · 19 km away
34. 1.76 km SE of Hebgen Lake Estates, MontanaMon, Feb 24, 2:09 PM MST · 2415 days ago · 12 km deep · 28 km away
35. 1.830 km E of West Yellowstone, MontanaTue, Feb 25, 10:20 AM MST · 2414 days ago · 3 km deep · 20 km away
36. 2.429 km W of Hebgen Lake Estates, MontanaTue, Feb 25, 6:41 PM MST · 2414 days ago · 12 km deep · 60 km away
37. 1.630 km SSE of Virginia City, MontanaWed, Feb 26, 1:30 PM MST · 2413 days ago · 13 km deep · 80 km away
38. 1.627 km W of Hebgen Lake Estates, MontanaThu, Feb 27, 12:47 AM MST · 2412 days ago · 12 km deep · 58 km away
39. 2.627 km W of Hebgen Lake Estates, MontanaFri, Feb 28, 3:48 AM MST · 2411 days ago · 11 km deep · 59 km away · felt by 1
40. 1.66 km SSE of Hebgen Lake Estates, MontanaFri, Feb 28, 5:06 AM MST · 2411 days ago · 13 km deep · 30 km away
41. 1.625 km S of Mammoth, WyomingFri, Feb 28, 11:48 AM MST · 2411 days ago · 4 km deep · 13 km away
42. 3.928 km W of Hebgen Lake Estates, MontanaSat, Feb 29, 6:06 AM MST · 2410 days ago · 12 km deep · 59 km away · felt by 26
43. 2.328 km W of Hebgen Lake Estates, MontanaSat, Feb 29, 6:09 AM MST · 2410 days ago · 13 km deep · 60 km away

Before

1. 2.156 km SSE of Mammoth, WyomingTue, Dec 31, 10:27 AM MST · 2470 days ago · 3 km deep · 47 km away
2. 2.118 km E of Island Park, IdahoSun, Dec 29, 9:52 PM MST · 2471 days ago · 17 km deep · 53 km away
3. 1.534 km S of Virginia City, MontanaSun, Dec 29, 2:25 PM MST · 2472 days ago · 3 km deep · 93 km away
4. 1.640 km SSE of Mammoth, WyomingSat, Dec 28, 11:41 AM MST · 2473 days ago · 6 km deep · 32 km away
5. 1.639 km SSE of Mammoth, WyomingThu, Dec 26, 9:21 AM MST · 2475 days ago · 4 km deep · 30 km away
6. 2.239 km SSE of Mammoth, WyomingThu, Dec 26, 9:19 AM MST · 2475 days ago · 5 km deep · 30 km away
7. 2.039 km SSE of Mammoth, WyomingWed, Dec 25, 6:47 PM MST · 2476 days ago · 5 km deep · 30 km away
8. 1.7WyomingWed, Dec 25, 6:34 PM MST · 2476 days ago · 5 km deep · 30 km away
9. 1.739 km SSE of Mammoth, WyomingWed, Dec 25, 6:23 PM MST · 2476 days ago · 5 km deep · 30 km away
10. 1.749 km SE of West Yellowstone, MontanaWed, Dec 25, 1:51 AM MST · 2476 days ago · 5 km deep · 52 km away
11. 2.149 km SE of West Yellowstone, MontanaWed, Dec 25, 1:47 AM MST · 2476 days ago · 4 km deep · 52 km away
12. 2.740 km ESE of West Yellowstone, MontanaMon, Dec 23, 4:42 PM MST · 2478 days ago · 4 km deep · 29 km away
13. 1.534 km S of Virginia City, MontanaThu, Dec 19, 10:57 PM MST · 2481 days ago · 4 km deep · 93 km away
14. 2.427 km WNW of Hebgen Lake Estates, MontanaMon, Dec 16, 7:17 AM MST · 2485 days ago · 10 km deep · 57 km away · felt by 1
15. 3.518 km E of Island Park, IdahoSun, Dec 15, 5:32 AM MST · 2486 days ago · 17 km deep · 53 km away · felt by 5
16. 1.743 km NE of Spencer, IdahoSun, Dec 15, 4:25 AM MST · 2486 days ago · 12 km deep · 87 km away
17. 3.440 km ESE of West Yellowstone, MontanaSat, Dec 14, 7:09 PM MST · 2486 days ago · 4 km deep · 28 km away · felt by 1
18. 1.929 km SSE of Virginia City, MontanaFri, Dec 13, 1:56 AM MST · 2488 days ago · 6 km deep · 88 km away
19. 2.030 km SSE of Virginia City, MontanaThu, Dec 12, 7:12 AM MST · 2489 days ago · 11 km deep · 80 km away
20. 1.530 km SSE of Virginia City, MontanaWed, Dec 11, 8:49 AM MST · 2490 days ago · 12 km deep · 81 km away

From the USGS Earthquake Hazards Program and its partner networks, event uu60356002. Read Mon, Oct 5, 2026, 1:31 PM UTC.