M1.7 earthquake 9 km ENE of Alta, Wyoming

Magnitude

1.7 (ML, local (Richter)), micro

Magnitude from

Montana Bureau of Mines and Geology

Local time

Thu, Oct 14, 2021, 12:32 AM MDT

UTC

2021-10-14 06:32:32 UTC

Depth

10.8 km (6.7 mi), shallow

Epicenter

43.792° N, 110.926° W

Region

Idaho

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 0.7 km in depth

Magnitude uncertainty

±0.17

Depth from

From location

Station coverage gap

120°

Stations used

13

• Driggs, IdahoPopulation 1,689. Forecast17 kmENE
• Jackson, WyomingPopulation 10,523. Forecast37 kmNNW
• Billings, MontanaPopulation 117,116. Forecast293 kmSW
• Calgary, CanadaPopulation 1,306,784. Forecast841 kmSSE

After

1. 1.665 km ESE of West Yellowstone, MontanaThu, Oct 14, 1:42 AM MDT · 1816 days ago · 7 km deep · 84 km away
2. 1.666 km ESE of West Yellowstone, MontanaThu, Oct 14, 2:03 AM MDT · 1816 days ago · 7 km deep · 85 km away
3. 1.647 km ESE of West Yellowstone, MontanaMon, Oct 18, 9:57 AM MDT · 1812 days ago · 5 km deep · 85 km away
4. 1.751 km SE of West Yellowstone, MontanaWed, Oct 20, 8:47 AM MDT · 1810 days ago · 4 km deep · 65 km away
5. 1.632 km ESE of West Yellowstone, MontanaSun, Oct 24, 7:05 AM MDT · 1806 days ago · 6 km deep · 89 km away
6. 1.631 km ESE of West Yellowstone, MontanaSun, Oct 24, 7:05 AM MDT · 1806 days ago · 7 km deep · 89 km away
7. 1.946 km NE of Alta, WyomingTue, Oct 26, 2:17 PM MDT · 1804 days ago · 10 km deep · 38 km away
8. 1.544 km SE of West Yellowstone, MontanaMon, Nov 1, 11:51 PM MDT · 1798 days ago · 4 km deep · 70 km away
9. 1.624 km ESE of Kelly, WyomingSat, Nov 6, 5:57 AM MDT · 1793 days ago · 3 km deep · 55 km away
10. 1.517 km ENE of Bondurant, WyomingMon, Nov 8, 8:59 AM MST · 1791 days ago · 6 km deep · 82 km away
11. 2.546 km NE of Alta, WyomingWed, Nov 10, 5:56 AM MST · 1789 days ago · 10 km deep · 38 km away · felt by 1
12. 2.246 km NE of Alta, WyomingWed, Nov 10, 6:15 AM MST · 1789 days ago · 7 km deep · 38 km away
13. 2.029 km ESE of Kelly, WyomingWed, Nov 10, 8:16 PM MST · 1789 days ago · 8 km deep · 60 km away
14. 1.540 km SSE of West Yellowstone, MontanaWed, Nov 10, 9:07 PM MST · 1789 days ago · 2 km deep · 63 km away
15. 1.6WyomingWed, Nov 10, 9:09 PM MST · 1789 days ago · 9 km deep · 62 km away
16. 1.846 km NE of Alta, WyomingSat, Nov 13, 12:03 AM MST · 1787 days ago · 10 km deep · 38 km away
17. 1.950 km SSE of Mammoth, WyomingTue, Nov 16, 5:31 AM MST · 1783 days ago · 2 km deep · 97 km away
18. 2.211 km E of Kelly, WyomingTue, Nov 16, 5:59 AM MST · 1783 days ago · 6 km deep · 41 km away
19. 1.99 km W of Bondurant, WyomingFri, Nov 19, 5:31 AM MST · 1780 days ago · 10 km deep · 73 km away
20. 2.011 km WSW of Bondurant, WyomingFri, Nov 19, 6:24 AM MST · 1780 days ago · 4 km deep · 79 km away
21. 1.532 km ESE of Kelly, WyomingSun, Nov 21, 8:50 PM MST · 1778 days ago · 5 km deep · 62 km away
22. 2.0WyomingMon, Nov 22, 12:30 AM MST · 1777 days ago · 0 km deep · 19 km away
23. 1.99 km W of Bondurant, WyomingMon, Nov 22, 4:46 AM MST · 1777 days ago · 8 km deep · 74 km away
24. 1.830 km ESE of West Yellowstone, MontanaFri, Nov 26, 8:00 AM MST · 1773 days ago · 8 km deep · 91 km away
25. 1.939 km ESE of West Yellowstone, MontanaSat, Nov 27, 2:00 AM MST · 1772 days ago · 7 km deep · 89 km away
26. 1.612 km NE of Bondurant, WyomingSun, Nov 28, 7:55 AM MST · 1771 days ago · 6 km deep · 78 km away
27. 1.946 km ESE of West Yellowstone, MontanaMon, Nov 29, 4:13 PM MST · 1770 days ago · 7 km deep · 88 km away
28. 1.916 km SW of Wilson, WyomingSun, Dec 5, 5:30 PM MST · 1764 days ago · 5 km deep · 44 km away

Before

1. 1.610 km ENE of Alta, WyomingTue, Oct 12, 2:22 AM MDT · 1818 days ago · 10 km deep · 0 km away
2. 1.528 km E of West Yellowstone, MontanaSun, Oct 10, 5:13 AM MDT · 1820 days ago · 8 km deep · 97 km away
3. 1.528 km E of West Yellowstone, MontanaSun, Oct 10, 5:10 AM MDT · 1820 days ago · 8 km deep · 97 km away
4. 2.410 km ENE of Alta, WyomingSat, Oct 9, 4:48 PM MDT · 1821 days ago · 11 km deep · 1 km away · felt by 2
5. 1.760 km SE of West Yellowstone, MontanaSat, Oct 9, 4:42 PM MDT · 1821 days ago · 4 km deep · 70 km away
6. 1.621 km SSW of Irwin, IdahoSat, Oct 9, 12:38 AM MDT · 1822 days ago · 6 km deep · 73 km away
7. 1.829 km E of West Yellowstone, MontanaThu, Sep 30, 8:40 PM MDT · 1830 days ago · 8 km deep · 94 km away
8. 1.960 km ESE of West Yellowstone, MontanaThu, Sep 30, 12:05 AM MDT · 1831 days ago · 8 km deep · 83 km away
9. 1.659 km ESE of West Yellowstone, MontanaWed, Sep 29, 6:28 AM MDT · 1831 days ago · 8 km deep · 84 km away
10. 1.659 km ESE of West Yellowstone, MontanaWed, Sep 29, 5:52 AM MDT · 1831 days ago · 7 km deep · 83 km away
11. 1.731 km E of West Yellowstone, MontanaSun, Sep 26, 10:17 PM MDT · 1834 days ago · 8 km deep · 93 km away
12. 1.631 km ESE of West Yellowstone, MontanaSun, Sep 26, 10:13 PM MDT · 1834 days ago · 3 km deep · 91 km away
13. 1.631 km ESE of West Yellowstone, MontanaSun, Sep 26, 10:12 PM MDT · 1834 days ago · 5 km deep · 92 km away
14. 1.731 km E of West Yellowstone, MontanaSun, Sep 26, 9:11 PM MDT · 1834 days ago · 6 km deep · 92 km away
15. 1.936 km NE of Bondurant, WyomingSat, Sep 25, 9:40 AM MDT · 1835 days ago · 6 km deep · 82 km away
16. 1.829 km E of West Yellowstone, MontanaWed, Sep 22, 6:53 PM MDT · 1838 days ago · 7 km deep · 95 km away
17. 1.529 km E of West Yellowstone, MontanaWed, Sep 22, 9:09 AM MDT · 1838 days ago · 6 km deep · 96 km away
18. 1.629 km E of West Yellowstone, MontanaWed, Sep 22, 8:00 AM MDT · 1838 days ago · 9 km deep · 94 km away
19. 1.729 km E of West Yellowstone, MontanaSun, Sep 19, 12:19 AM MDT · 1842 days ago · 7 km deep · 95 km away
20. 1.629 km E of West Yellowstone, MontanaSun, Sep 19, 12:00 AM MDT · 1842 days ago · 7 km deep · 95 km away

From the USGS Earthquake Hazards Program and its partner networks, event mb80526994. Read Sun, Oct 4, 2026, 6:48 PM UTC.