M1.7 earthquake 7 km NNW of Helper, Utah

Magnitude

1.7 (md), micro

Local time

Sat, Feb 19, 1983, 6:20 PM MST

UTC

1983-02-20 01:20:00 UTC

Depth

-1.2 km (-0.7 mi), shallow

Epicenter

39.748° N, 110.877° W

Region

Utah

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 2.1 km horizontally, 11.5 km in depth

Depth from

From location

Station coverage gap

220°, poorly surrounded by stations

Stations used

8

• Helper, UtahPopulation 2,112. Forecast7 kmNNW
• Springville, UtahPopulation 32,286. Forecast78 kmSE
• Provo, UtahPopulation 115,162. Forecast86 kmSE
• Phoenix, ArizonaPopulation 1,650,070. Forecast709 kmN

After

1. 1.810 km NNW of Orangeville, UtahSun, Feb 20, 6:30 PM MST · 15919 days ago · 2 km deep · 52 km away
2. 2.111 km NNW of Orangeville, UtahWed, Feb 23, 6:54 PM MST · 15916 days ago · 5 km deep · 53 km away
3. 2.320 km E of Kenilworth, UtahThu, Feb 24, 6:53 AM MST · 15916 days ago · 3 km deep · 26 km away
4. 1.96 km NE of Kenilworth, UtahSun, Feb 27, 9:04 PM MST · 15912 days ago · 3 km deep · 10 km away
5. 1.84 km NW of Huntington, UtahFri, Mar 4, 12:03 AM MST · 15908 days ago · 6 km deep · 45 km away
6. 1.74 km SW of Hiawatha, UtahSat, Mar 5, 5:28 PM MST · 15906 days ago · 6 km deep · 36 km away
7. 1.612 km NNW of Orangeville, UtahSat, Mar 12, 3:51 PM MST · 15899 days ago · 4 km deep · 51 km away
8. 1.713 km W of Huntington, UtahThu, Mar 17, 12:32 PM MST · 15895 days ago · 14 km deep · 50 km away
9. 1.911 km W of Huntington, UtahThu, Mar 17, 9:38 PM MST · 15894 days ago · 3 km deep · 49 km away
10. 1.911 km NNW of Orangeville, UtahSat, Mar 19, 1:15 PM MST · 15893 days ago · 7 km deep · 52 km away
11. 3.35 km NE of Sunnyside, UtahTue, Mar 22, 4:12 AM MST · 15890 days ago · 2 km deep · 50 km away
12. 1.712 km WNW of Huntington, UtahWed, Mar 23, 10:04 PM MST · 15888 days ago · 11 km deep · 48 km away
13. 2.220 km SE of Manti, UtahSun, Mar 27, 1:02 AM MST · 15885 days ago · 4 km deep · 84 km away
14. 1.811 km NW of Orangeville, UtahTue, Apr 5, 6:41 PM MST · 15875 days ago · 10 km deep · 55 km away
15. 2.012 km NW of Orangeville, UtahWed, Apr 6, 3:27 PM MST · 15875 days ago · 3 km deep · 53 km away
16. 1.64 km E of Heber City, UtahMon, Apr 11, 11:08 AM MST · 15870 days ago · 9 km deep · 94 km away
17. 2.213 km WNW of Huntington, UtahThu, Apr 14, 3:50 PM MST · 15866 days ago · 4 km deep · 48 km away
18. 2.49 km NW of Orangeville, UtahSun, Apr 17, 3:30 PM MST · 15863 days ago · -1 km deep · 57 km away

Before

1. 1.811 km W of Huntington, UtahThu, Feb 17, 11:06 PM MST · 15922 days ago · 4 km deep · 49 km away
2. 1.912 km NW of Orangeville, UtahThu, Feb 17, 9:39 AM MST · 15923 days ago · 3 km deep · 53 km away
3. 2.111 km WNW of Huntington, UtahThu, Feb 17, 2:44 AM MST · 15923 days ago · 11 km deep · 48 km away
4. 1.910 km NNW of Orangeville, UtahSun, Feb 13, 2:37 PM MST · 15927 days ago · 11 km deep · 51 km away
5. 2.513 km NW of Orangeville, UtahSat, Feb 12, 5:57 AM MST · 15928 days ago · 3 km deep · 53 km away
6. 1.612 km NNW of Orangeville, UtahSat, Feb 12, 5:14 AM MST · 15928 days ago · 14 km deep · 52 km away
7. 2.19 km NNW of Orangeville, UtahFri, Feb 11, 12:36 PM MST · 15929 days ago · 12 km deep · 52 km away
8. 2.112 km NW of Orangeville, UtahThu, Feb 10, 2:51 AM MST · 15930 days ago · 6 km deep · 55 km away
9. 2.311 km NW of Orangeville, UtahWed, Feb 9, 2:04 PM MST · 15931 days ago · 6 km deep · 54 km away
10. 1.89 km W of Huntington, UtahSun, Feb 6, 12:38 PM MST · 15934 days ago · 10 km deep · 51 km away
11. 1.89 km NNW of Orangeville, UtahSat, Feb 5, 10:15 PM MST · 15934 days ago · -1 km deep · 51 km away
12. 2.016 km WNW of Emery, UtahSat, Feb 5, 6:41 PM MST · 15934 days ago · 5 km deep · 95 km away
13. 2.012 km WNW of Huntington, UtahSat, Feb 5, 4:01 PM MST · 15934 days ago · 4 km deep · 48 km away
14. 2.28 km N of Orangeville, UtahSat, Feb 5, 3:58 PM MST · 15934 days ago · 13 km deep · 53 km away
15. 2.512 km NNW of Orangeville, UtahSat, Feb 5, 1:34 AM MST · 15935 days ago · 11 km deep · 51 km away
16. 1.723 km SE of Ephraim, UtahFri, Feb 4, 11:23 PM MST · 15935 days ago · 14 km deep · 70 km away
17. 1.610 km NW of Orangeville, UtahFri, Feb 4, 2:18 AM MST · 15936 days ago · 2 km deep · 56 km away
18. 1.911 km WNW of Huntington, UtahThu, Feb 3, 8:55 PM MST · 15936 days ago · 6 km deep · 48 km away
19. 1.820 km E of Kenilworth, UtahThu, Feb 3, 6:18 PM MST · 15936 days ago · 0 km deep · 26 km away
20. 1.710 km NW of Orangeville, UtahSun, Jan 30, 5:58 AM MST · 15941 days ago · -2 km deep · 57 km away

From the USGS Earthquake Hazards Program and its partner networks, event uu50008600. Read Tue, Sep 22, 2026, 10:00 AM UTC.