M2.1 earthquake 47 km SSE of Mammoth, Wyoming

Magnitude

2.1 (ML, local (Richter)), micro

Magnitude from

University of Utah Seismograph Stations

Local time

Mon, Jan 23, 2017, 3:46 PM MST

UTC

2017-01-23 22:46:12 UTC

Depth

1.6 km (1.0 mi), shallow

Epicenter

44.617° N, 110.378° W

Region

Montana

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 0.3 km in depth

Magnitude uncertainty

±0.31

Depth from

From location

Station coverage gap

67°

Stations used

18

• Gardiner, MontanaPopulation 875. Forecast53 kmSSE
• Bozeman, MontanaPopulation 43,405. Forecast129 kmSSE
• Billings, MontanaPopulation 117,116. Forecast196 kmSW
• Calgary, CanadaPopulation 1,306,784. Forecast767 kmSSE

After

1. 1.6WyomingThu, Jan 26, 8:54 AM MST · 3535 days ago · 6 km deep · 5 km away
2. 1.738 km S of Silver Gate, MontanaThu, Feb 2, 11:32 PM MST · 3527 days ago · 15 km deep · 30 km away
3. 1.839 km SSE of Mammoth, WyomingThu, Feb 9, 12:39 AM MST · 3521 days ago · 4 km deep · 9 km away
4. 1.638 km SSE of Mammoth, WyomingThu, Feb 9, 12:52 AM MST · 3521 days ago · 4 km deep · 9 km away
5. 1.95 km SSW of West Yellowstone, MontanaThu, Feb 9, 11:46 AM MST · 3521 days ago · 12 km deep · 60 km away
6. 2.025 km S of Mammoth, WyomingThu, Feb 9, 1:40 PM MST · 3521 days ago · 4 km deep · 27 km away
7. 2.425 km S of Mammoth, WyomingThu, Feb 9, 1:40 PM MST · 3521 days ago · 4 km deep · 27 km away
8. 1.720 km SSE of Mammoth, WyomingThu, Feb 9, 9:34 PM MST · 3520 days ago · 8 km deep · 28 km away
9. 2.314 km E of Hebgen Lake Estates, MontanaSat, Feb 11, 4:16 AM MST · 3519 days ago · 8 km deep · 54 km away
10. 1.948 km SE of West Yellowstone, MontanaSat, Feb 18, 4:15 PM MST · 3511 days ago · 4 km deep · 34 km away
11. 1.927 km SW of Silver Gate, MontanaSat, Feb 18, 7:25 PM MST · 3511 days ago · 4 km deep · 26 km away
12. 1.815 km ENE of Hebgen Lake Estates, MontanaSun, Feb 19, 6:57 PM MST · 3510 days ago · 7 km deep · 53 km away
13. 1.640 km SE of Mammoth, WyomingThu, Feb 23, 5:10 AM MST · 3507 days ago · 2 km deep · 8 km away
14. 2.034 km E of West Yellowstone, MontanaFri, Feb 24, 2:33 PM MST · 3506 days ago · 5 km deep · 23 km away
15. 1.725 km SSE of West Yellowstone, MontanaSat, Feb 25, 12:44 PM MST · 3505 days ago · 12 km deep · 50 km away
16. 2.623 km NE of West Yellowstone, MontanaWed, Mar 1, 7:44 PM MST · 3500 days ago · 6 km deep · 45 km away · felt by 1
17. 1.715 km ENE of Hebgen Lake Estates, MontanaFri, Mar 3, 5:00 PM MST · 3498 days ago · 4 km deep · 54 km away
18. 2.522 km NE of West Yellowstone, MontanaSun, Mar 5, 10:44 AM MST · 3497 days ago · 6 km deep · 45 km away
19. 2.023 km SW of Mammoth, WyomingSun, Mar 5, 12:14 PM MST · 3497 days ago · 6 km deep · 45 km away
20. 1.99 km SSW of West Yellowstone, MontanaMon, Mar 6, 1:32 PM MST · 3496 days ago · 8 km deep · 62 km away
21. 1.628 km WNW of Hebgen Lake Estates, MontanaTue, Mar 7, 8:56 PM MST · 3494 days ago · 13 km deep · 94 km away
22. 1.735 km E of West Yellowstone, MontanaSat, Mar 11, 11:32 AM MST · 3491 days ago · 4 km deep · 23 km away
23. 1.645 km SSE of West Yellowstone, MontanaSun, Mar 12, 12:48 AM MST · 3490 days ago · 6 km deep · 47 km away
24. 1.923 km SW of Mammoth, WyomingMon, Mar 13, 1:59 AM MDT · 3489 days ago · 6 km deep · 46 km away
25. 2.17 km SSW of West Yellowstone, MontanaWed, Mar 22, 1:45 PM MDT · 3480 days ago · 8 km deep · 60 km away

Before

1. 2.947 km SSE of Mammoth, WyomingMon, Jan 23, 1:53 PM MST · 3538 days ago · 4 km deep · 0 km away
2. 2.147 km SSE of Mammoth, WyomingMon, Jan 23, 1:52 PM MST · 3538 days ago · 5 km deep · 0 km away
3. 2.047 km SSE of Mammoth, WyomingMon, Jan 23, 1:33 PM MST · 3538 days ago · 5 km deep · 1 km away
4. 1.649 km SE of Mammoth, WyomingMon, Jan 23, 12:42 PM MST · 3538 days ago · 5 km deep · 2 km away
5. 2.020 km SE of Mammoth, WyomingSun, Jan 22, 11:18 AM MST · 3539 days ago · 7 km deep · 27 km away
6. 1.922 km SE of Mammoth, WyomingSun, Jan 22, 10:27 AM MST · 3539 days ago · 11 km deep · 26 km away
7. 1.815 km ENE of Hebgen Lake Estates, MontanaFri, Jan 20, 9:40 AM MST · 3541 days ago · 7 km deep · 53 km away
8. 1.516 km E of Hebgen Lake Estates, MontanaFri, Jan 20, 9:38 AM MST · 3541 days ago · 7 km deep · 52 km away
9. 3.315 km ENE of Hebgen Lake Estates, MontanaFri, Jan 20, 9:37 AM MST · 3541 days ago · 8 km deep · 53 km away · felt by 1
10. 1.518 km ENE of West Yellowstone, MontanaThu, Jan 19, 12:24 AM MST · 3542 days ago · 11 km deep · 44 km away
11. 1.84 km S of Hebgen Lake Estates, MontanaMon, Jan 16, 9:20 AM MST · 3545 days ago · 7 km deep · 66 km away
12. 1.521 km WNW of Hebgen Lake Estates, MontanaSun, Jan 8, 4:55 PM MST · 3552 days ago · 7 km deep · 87 km away
13. 2.474 km SE of West Yellowstone, MontanaSat, Jan 7, 11:50 AM MST · 3554 days ago · 9 km deep · 36 km away
14. 3.445 km ENE of Warm River, IdahoSat, Jan 7, 2:57 AM MST · 3554 days ago · 4 km deep · 53 km away
15. 2.046 km ENE of Warm River, IdahoSat, Jan 7, 2:56 AM MST · 3554 days ago · 3 km deep · 53 km away
16. 2.246 km ENE of Warm River, IdahoSat, Jan 7, 2:55 AM MST · 3554 days ago · 4 km deep · 53 km away
17. 1.922 km SSW of Mammoth, WyomingFri, Jan 6, 6:59 PM MST · 3554 days ago · 7 km deep · 38 km away
18. 1.627 km WNW of Hebgen Lake Estates, MontanaSun, Jan 1, 8:31 PM MST · 3559 days ago · 13 km deep · 94 km away
19. 1.646 km ENE of Warm River, IdahoFri, Dec 30, 5:49 PM MST · 3561 days ago · 2 km deep · 54 km away
20. 1.524 km SSW of Mammoth, WyomingWed, Dec 28, 11:52 PM MST · 3563 days ago · 4 km deep · 35 km away

From the USGS Earthquake Hazards Program and its partner networks, event uu60182597. Read Thu, Oct 1, 2026, 10:01 AM UTC.