M2.5 earthquake 10 km NW of Helper, Utah

Magnitude

2.5 (md), micro

Local time

Tue, Jan 13, 1987, 3:46 AM MST

UTC

1987-01-13 10:46:06 UTC

Depth

3.8 km (2.3 mi), shallow

Epicenter

39.745° N, 110.941° W

Region

Utah

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.4 km horizontally, 3.1 km in depth

Depth from

From location

Station coverage gap

201°, poorly surrounded by stations

Stations used

15

• Helper, UtahPopulation 2,112. Forecast10 kmNW
• Spanish Fork, UtahPopulation 37,935. Forecast73 kmSE
• Provo, UtahPopulation 115,162. Forecast82 kmSE
• Phoenix, ArizonaPopulation 1,650,070. Forecast707 kmN

After

1. 3.39 km SSE of Mayfield, UtahFri, Jan 16, 4:27 PM MST · 14494 days ago · 19 km deep · 99 km away
2. 2.712 km WNW of Huntington, UtahSat, Jan 17, 7:01 AM MST · 14493 days ago · 2 km deep · 46 km away
3. 2.714 km WNW of Huntington, UtahSun, Jan 18, 8:04 PM MST · 14492 days ago · 3 km deep · 46 km away
4. 2.911 km W of Huntington, UtahWed, Jan 21, 3:06 AM MST · 14489 days ago · 4 km deep · 48 km away
5. 1.712 km SSW of Levan, UtahWed, Jan 21, 5:52 AM MST · 14489 days ago · 15 km deep · 89 km away
6. 2.25 km ESE of Heber City, UtahFri, Jan 23, 11:12 AM MST · 14487 days ago · 8 km deep · 90 km away
7. 2.1UtahThu, Jan 29, 12:57 PM MST · 14481 days ago · 8 km deep · 94 km away
8. 1.85 km WSW of Vineyard, UtahThu, Jan 29, 12:57 PM MST · 14481 days ago · 2 km deep · 94 km away
9. 2.313 km WNW of Huntington, UtahWed, Feb 4, 4:15 PM MST · 14475 days ago · 3 km deep · 45 km away
10. 3.113 km WNW of Huntington, UtahWed, Feb 4, 5:15 PM MST · 14475 days ago · 4 km deep · 46 km away
11. 2.7UtahThu, Feb 5, 4:17 AM MST · 14474 days ago · 3 km deep · 46 km away
12. 2.413 km WNW of Huntington, UtahSun, Feb 8, 3:41 AM MST · 14471 days ago · 4 km deep · 46 km away
13. 2.012 km NE of Springville, UtahSun, Feb 8, 11:26 AM MST · 14471 days ago · -3 km deep · 74 km away
14. 2.25 km ENE of Daniel, UtahMon, Feb 9, 12:57 AM MST · 14470 days ago · 13 km deep · 90 km away
15. 3.014 km W of Huntington, UtahTue, Feb 10, 9:35 PM MST · 14469 days ago · 4 km deep · 47 km away
16. 2.90 km NE of Mount Nebo, UtahThu, Feb 12, 2:01 PM MST · 14467 days ago · 7 km deep · 89 km away
17. 1.65 km ENE of Daniel, UtahMon, Feb 23, 8:11 AM MST · 14456 days ago · 8 km deep · 89 km away
18. 2.813 km WNW of Huntington, UtahWed, Feb 25, 5:59 AM MST · 14454 days ago · 3 km deep · 46 km away
19. 3.512 km N of Tabiona, UtahWed, Mar 4, 8:02 PM MST · 14447 days ago · 15 km deep · 83 km away
20. 1.86 km SW of Vineyard, UtahTue, Mar 10, 10:16 PM MST · 14441 days ago · 5 km deep · 94 km away
21. 2.52 km SSE of Manti, UtahWed, Mar 11, 6:11 AM MST · 14440 days ago · 7 km deep · 80 km away
22. 2.61 km S of Manti, UtahWed, Mar 11, 8:31 AM MST · 14440 days ago · 7 km deep · 81 km away
23. 2.613 km WNW of Huntington, UtahThu, Mar 12, 12:05 AM MST · 14439 days ago · 5 km deep · 46 km away

Before

1. 2.127 km SSE of Independence, UtahSat, Jan 10, 4:02 AM MST · 14500 days ago · 2 km deep · 40 km away
2. 2.99 km NW of Helper, UtahThu, Jan 8, 7:59 AM MST · 14502 days ago · 5 km deep · 1 km away
3. 2.912 km NNW of Orangeville, UtahThu, Jan 1, 6:26 AM MST · 14509 days ago · 4 km deep · 48 km away
4. 1.83 km NNW of Rocky Ridge, UtahFri, Dec 26, 5:31 AM MST · 14515 days ago · 0 km deep · 81 km away
5. 2.53 km NNW of Kenilworth, UtahWed, Dec 24, 8:11 AM MST · 14517 days ago · 6 km deep · 11 km away
6. 2.414 km W of Huntington, UtahSun, Dec 21, 10:50 AM MST · 14520 days ago · 3 km deep · 47 km away
7. 2.78 km NW of Helper, UtahSat, Dec 20, 8:50 AM MST · 14521 days ago · 6 km deep · 1 km away

From the USGS Earthquake Hazards Program and its partner networks, event uu50031230. Read Tue, Sep 22, 2026, 4:50 PM UTC.