M1.7 earthquake 27 km S of Mammoth, Wyoming

Magnitude

1.7 (ml), micro

Local time

Thu, Dec 22, 2016, 9:56 AM MST

UTC

2016-12-22 16:56:17 UTC

Depth

4.5 km (2.8 mi), shallow

Epicenter

44.736° N, 110.769° W

Region

Montana

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 0.6 km in depth

Magnitude uncertainty

±0.37

Depth from

From location

Station coverage gap

145°

Stations used

10

• West Yellowstone, MontanaPopulation 1,339. Forecast28 kmENE
• Bozeman, MontanaPopulation 43,405. Forecast107 kmSSE
• Billings, MontanaPopulation 117,116. Forecast212 kmWSW
• Calgary, CanadaPopulation 1,306,784. Forecast744 kmSSE

After

1. 1.841 km SSE of Mammoth, WyomingSun, Dec 25, 12:13 AM MST · 3566 days ago · 4 km deep · 28 km away
2. 1.646 km ENE of Warm River, IdahoMon, Dec 26, 12:59 AM MST · 3565 days ago · 2 km deep · 55 km away
3. 1.646 km ENE of Warm River, IdahoMon, Dec 26, 1:15 AM MST · 3565 days ago · 2 km deep · 58 km away
4. 2.038 km SSE of Mammoth, WyomingTue, Dec 27, 6:25 AM MST · 3564 days ago · 5 km deep · 25 km away
5. 1.524 km SSW of Mammoth, WyomingWed, Dec 28, 11:52 PM MST · 3562 days ago · 4 km deep · 3 km away
6. 1.646 km ENE of Warm River, IdahoFri, Dec 30, 5:49 PM MST · 3560 days ago · 2 km deep · 58 km away
7. 1.627 km WNW of Hebgen Lake Estates, MontanaSun, Jan 1, 8:31 PM MST · 3558 days ago · 13 km deep · 61 km away
8. 1.843 km W of Hebgen Lake Estates, MontanaMon, Jan 2, 5:32 AM MST · 3558 days ago · 12 km deep · 77 km away
9. 1.922 km SSW of Mammoth, WyomingFri, Jan 6, 6:59 PM MST · 3553 days ago · 7 km deep · 6 km away
10. 2.246 km ENE of Warm River, IdahoSat, Jan 7, 2:55 AM MST · 3553 days ago · 4 km deep · 56 km away
11. 2.046 km ENE of Warm River, IdahoSat, Jan 7, 2:56 AM MST · 3553 days ago · 3 km deep · 57 km away
12. 3.445 km ENE of Warm River, IdahoSat, Jan 7, 2:57 AM MST · 3553 days ago · 4 km deep · 56 km away
13. 2.474 km SE of West Yellowstone, MontanaSat, Jan 7, 11:50 AM MST · 3553 days ago · 9 km deep · 60 km away
14. 1.521 km WNW of Hebgen Lake Estates, MontanaSun, Jan 8, 4:55 PM MST · 3552 days ago · 7 km deep · 54 km away
15. 1.84 km S of Hebgen Lake Estates, MontanaMon, Jan 16, 9:20 AM MST · 3544 days ago · 7 km deep · 34 km away
16. 1.518 km ENE of West Yellowstone, MontanaThu, Jan 19, 12:24 AM MST · 3541 days ago · 11 km deep · 11 km away
17. 3.315 km ENE of Hebgen Lake Estates, MontanaFri, Jan 20, 9:37 AM MST · 3540 days ago · 8 km deep · 19 km away · felt by 1
18. 1.516 km E of Hebgen Lake Estates, MontanaFri, Jan 20, 9:38 AM MST · 3540 days ago · 7 km deep · 18 km away
19. 1.815 km ENE of Hebgen Lake Estates, MontanaFri, Jan 20, 9:40 AM MST · 3540 days ago · 7 km deep · 19 km away
20. 1.922 km SE of Mammoth, WyomingSun, Jan 22, 10:27 AM MST · 3538 days ago · 11 km deep · 23 km away
21. 2.020 km SE of Mammoth, WyomingSun, Jan 22, 11:18 AM MST · 3538 days ago · 7 km deep · 23 km away
22. 1.649 km SE of Mammoth, WyomingMon, Jan 23, 12:42 PM MST · 3537 days ago · 5 km deep · 36 km away
23. 2.047 km SSE of Mammoth, WyomingMon, Jan 23, 1:33 PM MST · 3537 days ago · 5 km deep · 34 km away
24. 2.147 km SSE of Mammoth, WyomingMon, Jan 23, 1:52 PM MST · 3537 days ago · 5 km deep · 34 km away
25. 2.947 km SSE of Mammoth, WyomingMon, Jan 23, 1:53 PM MST · 3537 days ago · 4 km deep · 33 km away
26. 2.147 km SSE of Mammoth, WyomingMon, Jan 23, 3:46 PM MST · 3537 days ago · 2 km deep · 34 km away
27. 1.6WyomingThu, Jan 26, 8:54 AM MST · 3534 days ago · 6 km deep · 29 km away
28. 2.143 km NE of Spencer, IdahoFri, Jan 27, 10:27 AM MST · 3533 days ago · 14 km deep · 88 km away
29. 1.738 km S of Silver Gate, MontanaThu, Feb 2, 11:32 PM MST · 3526 days ago · 15 km deep · 61 km away
30. 3.442 km W of Hebgen Lake Estates, MontanaFri, Feb 3, 6:35 AM MST · 3526 days ago · 12 km deep · 76 km away
31. 1.839 km SSE of Mammoth, WyomingThu, Feb 9, 12:39 AM MST · 3520 days ago · 4 km deep · 25 km away
32. 1.638 km SSE of Mammoth, WyomingThu, Feb 9, 12:52 AM MST · 3520 days ago · 4 km deep · 25 km away
33. 1.95 km SSW of West Yellowstone, MontanaThu, Feb 9, 11:46 AM MST · 3520 days ago · 12 km deep · 32 km away
34. 2.025 km S of Mammoth, WyomingThu, Feb 9, 1:40 PM MST · 3520 days ago · 4 km deep · 8 km away
35. 2.425 km S of Mammoth, WyomingThu, Feb 9, 1:40 PM MST · 3520 days ago · 4 km deep · 9 km away
36. 1.720 km SSE of Mammoth, WyomingThu, Feb 9, 9:34 PM MST · 3519 days ago · 8 km deep · 14 km away
37. 2.314 km E of Hebgen Lake Estates, MontanaSat, Feb 11, 4:16 AM MST · 3518 days ago · 8 km deep · 20 km away
38. 1.948 km SE of West Yellowstone, MontanaSat, Feb 18, 4:15 PM MST · 3511 days ago · 4 km deep · 41 km away
39. 1.927 km SW of Silver Gate, MontanaSat, Feb 18, 7:25 PM MST · 3510 days ago · 4 km deep · 43 km away
40. 1.815 km ENE of Hebgen Lake Estates, MontanaSun, Feb 19, 6:57 PM MST · 3509 days ago · 7 km deep · 19 km away

Before

1. 1.649 km SE of West Yellowstone, MontanaTue, Dec 20, 2:07 PM MST · 3571 days ago · 4 km deep · 44 km away
2. 1.727 km W of Hebgen Lake Estates, MontanaTue, Dec 13, 7:48 PM MST · 3577 days ago · 13 km deep · 61 km away
3. 1.648 km ESE of West Yellowstone, MontanaMon, Dec 12, 11:57 PM MST · 3578 days ago · 4 km deep · 33 km away
4. 2.326 km SSW of Mammoth, WyomingMon, Dec 12, 10:49 PM MST · 3578 days ago · 6 km deep · 1 km away
5. 2.226 km S of Mammoth, WyomingMon, Dec 12, 4:05 PM MST · 3579 days ago · 7 km deep · 1 km away
6. 1.945 km ESE of West Yellowstone, MontanaThu, Dec 8, 12:45 PM MST · 3583 days ago · 2 km deep · 30 km away
7. 2.044 km ESE of West Yellowstone, MontanaThu, Dec 8, 12:10 PM MST · 3583 days ago · 2 km deep · 29 km away
8. 1.945 km ESE of West Yellowstone, MontanaThu, Dec 8, 11:47 AM MST · 3583 days ago · 4 km deep · 30 km away
9. 2.026 km W of Hebgen Lake Estates, MontanaThu, Dec 1, 9:16 AM MST · 3590 days ago · 13 km deep · 60 km away
10. 1.747 km SE of Mammoth, WyomingThu, Dec 1, 8:09 AM MST · 3590 days ago · 5 km deep · 36 km away
11. 2.140 km NE of Spencer, IdahoWed, Nov 30, 5:29 AM MST · 3591 days ago · 10 km deep · 89 km away
12. 2.014 km NE of West Yellowstone, MontanaTue, Nov 29, 2:45 PM MST · 3592 days ago · 8 km deep · 16 km away
13. 1.9WyomingMon, Nov 28, 8:52 PM MST · 3592 days ago · 2 km deep · 50 km away
14. 1.526 km WNW of Hebgen Lake Estates, MontanaSun, Nov 27, 12:37 AM MST · 3594 days ago · 7 km deep · 59 km away
15. 1.627 km S of Mammoth, WyomingSat, Nov 26, 11:31 PM MST · 3594 days ago · 5 km deep · 0 km away
16. 1.942 km SSE of Mammoth, WyomingSat, Nov 26, 9:56 AM MST · 3595 days ago · 5 km deep · 29 km away
17. 1.842 km SSE of Mammoth, WyomingSat, Nov 26, 7:58 AM MST · 3595 days ago · 6 km deep · 29 km away
18. 2.342 km SSE of Mammoth, WyomingSat, Nov 26, 7:55 AM MST · 3595 days ago · 5 km deep · 29 km away
19. 2.941 km SSE of Mammoth, WyomingSat, Nov 26, 7:53 AM MST · 3595 days ago · 4 km deep · 28 km away · felt by 3
20. 1.648 km SE of West Yellowstone, MontanaFri, Nov 25, 1:32 AM MST · 3596 days ago · 5 km deep · 43 km away

From the USGS Earthquake Hazards Program and its partner networks, event uu60175567. Read Wed, Sep 30, 2026, 12:04 PM UTC.