M1.8 earthquake 20 km S of Mammoth, Wyoming

Magnitude

1.8 (ml), micro

Local time

Sat, Apr 23, 2016, 8:53 PM MDT

UTC

2016-04-24 02:53:29 UTC

Depth

4.1 km (2.5 mi), shallow

Epicenter

44.789° N, 110.695° W

Region

Montana

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.8 km horizontally, 1.2 km in depth

Magnitude uncertainty

±0.12

Depth from

From location

Station coverage gap

199°, poorly surrounded by stations

Stations used

10

• Gardiner, MontanaPopulation 875. Forecast27 kmS
• Bozeman, MontanaPopulation 43,405. Forecast103 kmSSE
• Billings, MontanaPopulation 117,116. Forecast204 kmWSW
• Calgary, CanadaPopulation 1,306,784. Forecast740 kmSSE

After

1. 2.020 km S of Mammoth, WyomingSat, Apr 23, 9:48 PM MDT · 3812 days ago · 4 km deep · 0 km away
2. 1.819 km S of Mammoth, WyomingSat, Apr 23, 11:32 PM MDT · 3812 days ago · 4 km deep · 2 km away
3. 1.619 km S of Mammoth, WyomingSun, Apr 24, 12:07 AM MDT · 3812 days ago · 4 km deep · 2 km away
4. 1.955 km SE of West Yellowstone, MontanaSun, Apr 24, 4:46 AM MDT · 3811 days ago · 2 km deep · 53 km away
5. 2.129 km SSE of Virginia City, MontanaMon, May 2, 3:07 AM MDT · 3803 days ago · 4 km deep · 95 km away
6. 1.729 km SSE of Virginia City, MontanaMon, May 2, 3:10 AM MDT · 3803 days ago · 5 km deep · 95 km away
7. 2.130 km SSE of Virginia City, MontanaThu, May 5, 12:29 AM MDT · 3801 days ago · 4 km deep · 95 km away
8. 1.828 km SSE of Virginia City, MontanaThu, May 5, 1:36 PM MDT · 3800 days ago · 9 km deep · 96 km away
9. 2.328 km SSE of Virginia City, MontanaThu, May 5, 1:40 PM MDT · 3800 days ago · 3 km deep · 96 km away
10. 1.649 km SE of Mammoth, WyomingFri, May 13, 9:19 AM MDT · 3792 days ago · 3 km deep · 34 km away
11. 2.45 km SW of Hebgen Lake Estates, MontanaMon, May 16, 3:27 PM MDT · 3789 days ago · 12 km deep · 44 km away
12. 1.760 km ESE of West Yellowstone, MontanaWed, May 18, 6:53 PM MDT · 3787 days ago · 3 km deep · 46 km away
13. 2.510 km NE of West Yellowstone, MontanaFri, May 27, 2:02 PM MDT · 3778 days ago · 8 km deep · 26 km away
14. 1.811 km NE of West Yellowstone, MontanaFri, May 27, 2:42 PM MDT · 3778 days ago · 9 km deep · 26 km away
15. 1.640 km S of Silver Gate, MontanaTue, Jun 7, 3:14 AM MDT · 3767 days ago · 10 km deep · 57 km away
16. 3.745 km W of Hebgen Lake Estates, MontanaWed, Jun 8, 9:31 PM MDT · 3766 days ago · 10 km deep · 85 km away · felt by 5
17. 2.061 km NNE of Kelly, WyomingSun, Jun 12, 11:31 AM MDT · 3762 days ago · 11 km deep · 83 km away
18. 4.345 km W of Hebgen Lake Estates, MontanaMon, Jun 13, 6:14 AM MDT · 3761 days ago · 10 km deep · 85 km away · felt by 3
19. 2.4Idaho-Montana border regionMon, Jun 13, 6:16 AM MDT · 3761 days ago · 11 km deep · 83 km away
20. 2.043 km SE of West Yellowstone, MontanaMon, Jun 13, 3:59 PM MDT · 3761 days ago · 2 km deep · 47 km away
21. 2.529 km S of Virginia City, MontanaTue, Jun 14, 2:23 AM MDT · 3760 days ago · 3 km deep · 97 km away
22. 4.045 km W of Hebgen Lake Estates, MontanaTue, Jun 14, 8:35 AM MDT · 3760 days ago · 10 km deep · 85 km away · felt by 3
23. 1.620 km SSW of Mammoth, WyomingTue, Jun 14, 10:15 PM MDT · 3760 days ago · 2 km deep · 9 km away
24. 1.844 km W of Hebgen Lake Estates, MontanaThu, Jun 16, 9:05 AM MDT · 3758 days ago · 11 km deep · 84 km away
25. 1.647 km NW of Island Park, IdahoThu, Jun 16, 4:54 PM MDT · 3758 days ago · 10 km deep · 88 km away
26. 2.146 km ENE of Warm River, IdahoSat, Jun 18, 6:22 PM MDT · 3756 days ago · 10 km deep · 60 km away
27. 3.444 km W of Hebgen Lake Estates, MontanaSun, Jun 19, 10:35 PM MDT · 3755 days ago · 10 km deep · 84 km away
28. 1.944 km W of Hebgen Lake Estates, MontanaMon, Jun 20, 5:30 PM MDT · 3754 days ago · 12 km deep · 83 km away
29. 1.642 km W of Hebgen Lake Estates, MontanaMon, Jun 20, 5:58 PM MDT · 3754 days ago · 11 km deep · 82 km away

Before

1. 2.129 km SSE of Virginia City, MontanaSat, Apr 23, 7:49 AM MDT · 3812 days ago · 3 km deep · 96 km away
2. 1.929 km SSE of Virginia City, MontanaSat, Apr 23, 7:07 AM MDT · 3812 days ago · 4 km deep · 95 km away
3. 1.651 km SSE of Mammoth, WyomingWed, Apr 20, 4:54 PM MDT · 3815 days ago · 3 km deep · 34 km away
4. 1.750 km SSE of Mammoth, WyomingWed, Apr 20, 9:59 AM MDT · 3815 days ago · 2 km deep · 33 km away
5. 2.529 km SSE of Virginia City, MontanaTue, Apr 19, 7:46 PM MDT · 3816 days ago · 3 km deep · 96 km away
6. 2.129 km SSE of Virginia City, MontanaTue, Apr 19, 2:00 PM MDT · 3816 days ago · 8 km deep · 96 km away
7. 2.329 km SSE of Virginia City, MontanaTue, Apr 19, 7:43 AM MDT · 3816 days ago · 6 km deep · 96 km away
8. 2.029 km SSE of Virginia City, MontanaTue, Apr 19, 1:41 AM MDT · 3816 days ago · 3 km deep · 96 km away
9. 1.639 km SSE of Mammoth, WyomingMon, Apr 18, 3:39 PM MDT · 3817 days ago · 5 km deep · 23 km away
10. 2.729 km SSE of Virginia City, MontanaMon, Apr 18, 5:08 AM MDT · 3817 days ago · 6 km deep · 96 km away
11. 2.929 km SSE of Virginia City, MontanaMon, Apr 18, 1:56 AM MDT · 3817 days ago · 5 km deep · 97 km away
12. 3.028 km SSE of Virginia City, MontanaSun, Apr 17, 10:46 PM MDT · 3818 days ago · 3 km deep · 96 km away
13. 2.329 km SSE of Virginia City, MontanaSun, Apr 17, 10:31 PM MDT · 3818 days ago · 8 km deep · 96 km away
14. 2.629 km SSE of Virginia City, MontanaSun, Apr 17, 10:16 PM MDT · 3818 days ago · 2 km deep · 96 km away
15. 3.229 km SSE of Virginia City, MontanaSun, Apr 17, 7:58 PM MDT · 3818 days ago · 2 km deep · 96 km away · felt by 1
16. 1.561 km ESE of West Yellowstone, MontanaSun, Apr 17, 6:53 AM MDT · 3818 days ago · 7 km deep · 48 km away
17. 1.729 km SSE of Virginia City, MontanaFri, Apr 15, 11:26 AM MDT · 3820 days ago · 5 km deep · 96 km away
18. 2.529 km SSE of Virginia City, MontanaFri, Apr 15, 10:59 AM MDT · 3820 days ago · 9 km deep · 97 km away
19. 2.629 km S of Virginia City, MontanaFri, Apr 15, 10:35 AM MDT · 3820 days ago · 3 km deep · 97 km away
20. 2.129 km S of Virginia City, MontanaFri, Apr 15, 9:42 AM MDT · 3820 days ago · 2 km deep · 97 km away

From the USGS Earthquake Hazards Program and its partner networks, event uu60146342. Read Wed, Sep 30, 2026, 6:01 PM UTC.