M1.6 earthquake 9 km NNE of Howell, Utah

Magnitude

1.6 (md), micro

Local time

Mon, Dec 14, 1987, 5:43 PM MST

UTC

1987-12-15 00:43:25 UTC

Depth

10.8 km (6.7 mi), shallow

Epicenter

41.878° N, 112.402° W

Region

Utah

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.7 km horizontally, 1.2 km in depth

Depth from

From location

Station coverage gap

162°

Stations used

10

• Thatcher, UtahPopulation 789. Forecast22 kmNNW
• Smithfield, UtahPopulation 10,782. Forecast47 kmW
• Salt Lake City, UtahPopulation 215,548. Forecast131 kmNNW

After

1. 1.986 km W of Hooper, UtahTue, Dec 15, 11:00 AM MST · 14161 days ago · 5 km deep · 98 km away
2. 2.386 km E of Montello, NevadaSat, Dec 19, 2:57 PM MST · 14157 days ago · 6 km deep · 100 km away
3. 2.613 km ESE of Snowville, UtahSun, Dec 20, 6:15 PM MST · 14155 days ago · 7 km deep · 14 km away
4. 1.886 km E of Montello, NevadaTue, Dec 22, 5:55 AM MST · 14154 days ago · 7 km deep · 100 km away
5. 1.784 km E of Montello, NevadaThu, Dec 24, 1:23 PM MST · 14152 days ago · 4 km deep · 99 km away
6. 1.711 km ENE of Howell, UtahWed, Dec 30, 12:32 PM MST · 14146 days ago · 0 km deep · 7 km away
7. 2.118 km WSW of Georgetown, IdahoSun, Jan 3, 6:43 AM MST · 14142 days ago · 2 km deep · 92 km away
8. 1.685 km E of Montello, NevadaWed, Jan 6, 12:04 PM MST · 14139 days ago · 6 km deep · 100 km away
9. 1.586 km E of Montello, NevadaWed, Jan 6, 2:10 PM MST · 14139 days ago · 7 km deep · 99 km away
10. 1.683 km E of Montello, NevadaWed, Jan 6, 9:11 PM MST · 14138 days ago · 5 km deep · 99 km away
11. 1.786 km E of Montello, NevadaThu, Jan 7, 6:36 PM MST · 14137 days ago · 7 km deep · 100 km away
12. 1.683 km E of Montello, NevadaFri, Jan 8, 2:32 PM MST · 14137 days ago · 4 km deep · 99 km away
13. 1.712 km NE of Howell, UtahSat, Jan 9, 8:23 PM MST · 14135 days ago · 8 km deep · 6 km away
14. 1.649 km WNW of Hooper, UtahWed, Jan 13, 6:21 PM MST · 14131 days ago · 5 km deep · 73 km away
15. 2.09 km NNW of Garden City, UtahWed, Jan 20, 12:49 PM MST · 14125 days ago · -2 km deep · 80 km away
16. 2.010 km ENE of Howell, UtahWed, Jan 27, 2:23 AM MST · 14118 days ago · 0 km deep · 8 km away
17. 1.910 km ENE of Howell, UtahWed, Jan 27, 3:48 PM MST · 14118 days ago · 5 km deep · 8 km away
18. 1.985 km E of Montello, NevadaWed, Jan 27, 4:22 PM MST · 14118 days ago · 6 km deep · 98 km away
19. 1.685 km E of Montello, NevadaWed, Jan 27, 4:35 PM MST · 14117 days ago · 6 km deep · 99 km away
20. 2.184 km E of Montello, NevadaWed, Jan 27, 4:39 PM MST · 14117 days ago · 8 km deep · 99 km away
21. 3.087 km E of Montello, NevadaThu, Jan 28, 5:58 PM MST · 14116 days ago · 9 km deep · 99 km away
22. 2.185 km E of Montello, NevadaThu, Jan 28, 6:09 PM MST · 14116 days ago · 9 km deep · 99 km away
23. 1.585 km E of Montello, NevadaFri, Jan 29, 4:01 AM MST · 14116 days ago · 8 km deep · 99 km away
24. 1.985 km E of Montello, NevadaFri, Jan 29, 6:44 PM MST · 14115 days ago · 9 km deep · 100 km away
25. 3.085 km E of Montello, NevadaFri, Jan 29, 10:37 PM MST · 14115 days ago · 9 km deep · 99 km away
26. 2.385 km E of Montello, NevadaFri, Jan 29, 10:39 PM MST · 14115 days ago · 9 km deep · 99 km away
27. 2.785 km E of Montello, NevadaSat, Jan 30, 2:02 AM MST · 14115 days ago · 10 km deep · 100 km away
28. 1.785 km E of Montello, NevadaSat, Jan 30, 7:40 AM MST · 14115 days ago · 7 km deep · 98 km away
29. 1.811 km ENE of Howell, UtahSat, Jan 30, 8:26 PM MST · 14114 days ago · 3 km deep · 7 km away
30. 1.685 km E of Montello, NevadaFri, Feb 5, 1:36 AM MST · 14109 days ago · 7 km deep · 99 km away
31. 2.883 km E of Montello, NevadaFri, Feb 5, 9:14 AM MST · 14109 days ago · 9 km deep · 100 km away
32. 1.584 km E of Montello, NevadaSat, Feb 6, 11:40 AM MST · 14108 days ago · 4 km deep · 98 km away
33. 1.985 km E of Montello, NevadaMon, Feb 8, 4:54 PM MST · 14105 days ago · 6 km deep · 99 km away
34. 2.183 km E of Montello, NevadaWed, Feb 10, 3:07 AM MST · 14104 days ago · 4 km deep · 99 km away
35. 1.783 km E of Montello, NevadaWed, Feb 10, 10:55 AM MST · 14104 days ago · 5 km deep · 99 km away
36. 1.711 km NE of Howell, UtahThu, Feb 11, 9:01 PM MST · 14102 days ago · 0 km deep · 6 km away
37. 2.18 km WNW of Bear River City, UtahFri, Feb 12, 3:57 AM MST · 14102 days ago · 4 km deep · 31 km away

Before

1. 1.8UtahMon, Dec 14, 9:39 AM MST · 14162 days ago · 8 km deep · 99 km away
2. 2.285 km E of Montello, NevadaFri, Dec 11, 6:05 AM MST · 14165 days ago · 4 km deep · 99 km away
3. 2.810 km ENE of Howell, UtahFri, Dec 11, 5:43 AM MST · 14165 days ago · 2 km deep · 7 km away
4. 1.810 km ENE of Avon, UtahWed, Dec 2, 7:17 AM MST · 14174 days ago · 4 km deep · 66 km away
5. 2.218 km ENE of Snowville, UtahWed, Dec 2, 4:33 AM MST · 14174 days ago · 1 km deep · 21 km away
6. 1.69 km ENE of Howell, UtahMon, Nov 30, 6:07 PM MST · 14175 days ago · 4 km deep · 8 km away
7. 2.39 km WSW of Garden City, UtahSun, Nov 29, 9:12 AM MST · 14177 days ago · -2 km deep · 74 km away
8. 1.612 km SE of Snowville, UtahSun, Nov 29, 8:58 AM MST · 14177 days ago · 4 km deep · 16 km away
9. 1.613 km SE of Snowville, UtahSun, Nov 29, 12:06 AM MST · 14177 days ago · 7 km deep · 15 km away
10. 1.586 km E of Montello, NevadaFri, Nov 27, 3:05 PM MST · 14179 days ago · 6 km deep · 100 km away
11. 2.59 km W of Garden, UtahFri, Nov 27, 1:59 PM MST · 14179 days ago · -3 km deep · 75 km away
12. 1.983 km E of Montello, NevadaFri, Nov 27, 7:45 AM MST · 14179 days ago · 9 km deep · 100 km away
13. 1.884 km E of Montello, NevadaFri, Nov 27, 2:43 AM MST · 14179 days ago · 4 km deep · 100 km away
14. 1.619 km SW of Thatcher, UtahTue, Nov 24, 8:13 PM MST · 14181 days ago · 0 km deep · 35 km away
15. 1.622 km W of Randolph, UtahWed, Nov 18, 7:07 PM MST · 14187 days ago · 2 km deep · 83 km away
16. 1.7UtahMon, Nov 16, 3:08 PM MST · 14190 days ago · 0 km deep · 98 km away

From the USGS Earthquake Hazards Program and its partner networks, event uu50035035. Read Tue, Sep 22, 2026, 10:58 AM UTC.