M1.9 earthquake 8 km ENE of Alta, Wyoming

Magnitude

1.9 (ML, local (Richter)), micro

Magnitude from

Montana Bureau of Mines and Geology

Local time

Mon, Apr 18, 2016, 4:27 PM MDT

UTC

2016-04-18 22:27:03 UTC

Depth

5.0 km (3.1 mi), shallow

Epicenter

43.774° N, 110.941° W

Region

Idaho

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.8 km horizontally, 16.1 km in depth

Magnitude uncertainty

±0.14

Depth from

Operator assigned

Station coverage gap

184°, poorly surrounded by stations

Stations used

7

• Driggs, IdahoPopulation 1,689. Forecast15 kmENE
• Jackson, WyomingPopulation 10,523. Forecast36 kmNNW
• Billings, MontanaPopulation 117,116. Forecast295 kmSW
• Calgary, CanadaPopulation 1,306,784. Forecast843 kmSSE

After

1. 2.28 km ENE of Alta, WyomingMon, Apr 18, 9:32 PM MDT · 3817 days ago · 10 km deep · 1 km away
2. 2.59 km SE of Hoback, WyomingWed, Apr 20, 8:33 AM MDT · 3816 days ago · 2 km deep · 65 km away
3. 1.750 km SSE of Mammoth, WyomingWed, Apr 20, 9:59 AM MDT · 3816 days ago · 2 km deep · 100 km away
4. 2.49 km S of Hoback, WyomingWed, Apr 20, 11:05 AM MDT · 3815 days ago · 6 km deep · 65 km away
5. 1.651 km SSE of Mammoth, WyomingWed, Apr 20, 4:54 PM MDT · 3815 days ago · 3 km deep · 99 km away
6. 1.75 km SSE of Hoback, WyomingThu, Apr 21, 9:53 PM MDT · 3814 days ago · 5 km deep · 62 km away
7. 1.955 km SE of West Yellowstone, MontanaSun, Apr 24, 4:46 AM MDT · 3812 days ago · 2 km deep · 66 km away
8. 1.825 km S of Irwin, IdahoWed, Apr 27, 8:05 AM MDT · 3809 days ago · 5 km deep · 74 km away
9. 1.69 km W of Hoback, WyomingThu, Apr 28, 5:39 PM MDT · 3807 days ago · 2 km deep · 56 km away
10. 1.760 km ESE of West Yellowstone, MontanaWed, May 18, 6:53 PM MDT · 3787 days ago · 3 km deep · 83 km away
11. 1.919 km E of Kelly, WyomingThu, May 19, 10:36 AM MDT · 3786 days ago · 5 km deep · 49 km away
12. 1.99 km S of Hoback, WyomingTue, May 31, 1:21 PM MDT · 3774 days ago · 4 km deep · 65 km away
13. 2.061 km NNE of Kelly, WyomingSun, Jun 12, 11:31 AM MDT · 3762 days ago · 11 km deep · 67 km away
14. 2.043 km SE of West Yellowstone, MontanaMon, Jun 13, 3:59 PM MDT · 3761 days ago · 2 km deep · 68 km away

Before

1. 1.68 km ENE of Alta, WyomingMon, Apr 18, 4:26 PM MDT · 3817 days ago · 4 km deep · 1 km away
2. 1.96 km SE of Hoback, WyomingMon, Apr 18, 6:13 AM MDT · 3818 days ago · -2 km deep · 62 km away
3. 1.96 km S of Hoback, WyomingSun, Apr 17, 6:37 PM MDT · 3818 days ago · 5 km deep · 62 km away
4. 1.6WyomingSun, Apr 17, 5:52 PM MDT · 3818 days ago · 12 km deep · 63 km away
5. 2.47 km SSE of Hoback, WyomingSun, Apr 17, 4:48 PM MDT · 3818 days ago · 4 km deep · 63 km away
6. 1.561 km ESE of West Yellowstone, MontanaSun, Apr 17, 6:53 AM MDT · 3819 days ago · 7 km deep · 81 km away
7. 2.36 km S of Hoback, WyomingSun, Apr 10, 7:00 PM MDT · 3825 days ago · -2 km deep · 63 km away
8. 2.1WyomingSun, Apr 10, 5:49 PM MDT · 3825 days ago · 5 km deep · 61 km away
9. 1.918 km SSW of Irwin, IdahoMon, Apr 4, 7:11 PM MDT · 3831 days ago · 6 km deep · 68 km away
10. 1.517 km SE of West Yellowstone, MontanaFri, Mar 25, 1:23 AM MDT · 3842 days ago · 10 km deep · 86 km away
11. 1.816 km SE of West Yellowstone, MontanaFri, Mar 25, 1:17 AM MDT · 3842 days ago · 8 km deep · 87 km away
12. 1.617 km SE of West Yellowstone, MontanaThu, Mar 24, 11:04 PM MDT · 3842 days ago · 8 km deep · 86 km away
13. 1.613 km E of Alta, WyomingWed, Mar 23, 1:20 AM MDT · 3844 days ago · 7 km deep · 6 km away

From the USGS Earthquake Hazards Program and its partner networks, event mb80136854. Read Thu, Oct 1, 2026, 3:36 AM UTC.