M1.8 earthquake 4 km N of Summit, Utah

Magnitude

1.8 (md), micro

Local time

Fri, Aug 28, 1981, 3:25 PM MDT

UTC

1981-08-28 21:25:29 UTC

Depth

3.5 km (2.2 mi), shallow

Epicenter

37.843° N, 112.933° W

Region

Utah

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.7 km horizontally, 2.4 km in depth

Depth from

From location

Station coverage gap

134°

Stations used

9

• Parowan, UtahPopulation 2,926. Forecast9 kmW
• Cedar City, UtahPopulation 30,184. Forecast22 kmNNE
• Sunrise Manor, NevadaPopulation 189,372. Forecast263 kmNE
• Phoenix, ArizonaPopulation 1,650,070. Forecast495 kmN

After

1. 1.924 km NNW of Panguitch, UtahTue, Sep 1, 12:55 AM MDT · 16458 days ago · 13 km deep · 44 km away
2. 1.810 km WNW of Kanarraville, UtahTue, Sep 29, 3:00 PM MDT · 16429 days ago · 11 km deep · 43 km away
3. 2.69 km WNW of Glendale, UtahWed, Sep 30, 2:51 AM MDT · 16429 days ago · 17 km deep · 57 km away
4. 1.7UtahFri, Oct 2, 1:56 PM MDT · 16426 days ago · 3 km deep · 13 km away
5. 2.05 km W of Enoch, UtahSun, Oct 4, 4:57 PM MDT · 16424 days ago · 3 km deep · 15 km away
6. 1.711 km ENE of Beaver, UtahWed, Oct 14, 5:12 PM MDT · 16414 days ago · 6 km deep · 64 km away
7. 2.514 km WSW of Enterprise, UtahFri, Oct 16, 1:37 PM MDT · 16412 days ago · 6 km deep · 89 km away
8. 1.68 km NW of Circleville, UtahMon, Oct 19, 1:19 PM MDT · 16410 days ago · 6 km deep · 66 km away
9. 1.98 km NNW of Junction, UtahTue, Oct 27, 10:00 AM MST · 16402 days ago · 6 km deep · 77 km away

Before

1. 3.04 km N of Summit, UtahFri, Aug 28, 3:19 PM MDT · 16461 days ago · 9 km deep · 1 km away
2. 1.96 km NNW of Summit, UtahThu, Aug 27, 8:43 PM MDT · 16462 days ago · 6 km deep · 2 km away
3. 2.06 km N of Summit, UtahThu, Aug 27, 8:37 PM MDT · 16462 days ago · 5 km deep · 2 km away
4. 2.64 km SSW of Hatch, UtahThu, Aug 27, 1:01 PM MDT · 16463 days ago · 3 km deep · 50 km away
5. 2.1UtahFri, Aug 14, 5:52 PM MDT · 16475 days ago · 10 km deep · 29 km away
6. 2.19 km SW of Hatch, UtahThu, Aug 13, 12:40 PM MDT · 16477 days ago · 6 km deep · 47 km away
7. 2.519 km SSE of Minersville, UtahWed, Aug 12, 2:35 PM MDT · 16477 days ago · 22 km deep · 27 km away
8. 2.214 km SSE of Minersville, UtahWed, Aug 12, 1:21 PM MDT · 16478 days ago · 19 km deep · 30 km away
9. 1.511 km S of Marysvale, UtahWed, Aug 12, 12:12 PM MDT · 16478 days ago · 13 km deep · 82 km away
10. 2.018 km N of Paragonah, UtahTue, Aug 11, 2:32 PM MDT · 16478 days ago · 6 km deep · 26 km away
11. 2.216 km N of Paragonah, UtahTue, Aug 11, 8:16 AM MDT · 16479 days ago · 7 km deep · 24 km away
12. 1.614 km ESE of Minersville, UtahMon, Aug 10, 9:00 PM MDT · 16479 days ago · 16 km deep · 37 km away
13. 1.515 km SE of Minersville, UtahMon, Aug 10, 8:33 PM MDT · 16479 days ago · 10 km deep · 31 km away
14. 1.717 km SSE of Beaver, UtahSun, Aug 9, 10:01 AM MDT · 16481 days ago · 6 km deep · 45 km away
15. 1.922 km WSW of Circleville, UtahSun, Aug 9, 12:13 AM MDT · 16481 days ago · 13 km deep · 46 km away
16. 2.018 km N of Paragonah, UtahSat, Aug 8, 1:32 AM MDT · 16482 days ago · 5 km deep · 26 km away
17. 3.119 km N of Paragonah, UtahSat, Aug 8, 12:20 AM MDT · 16482 days ago · 12 km deep · 26 km away
18. 2.118 km N of Paragonah, UtahSat, Aug 8, 12:12 AM MDT · 16482 days ago · 9 km deep · 26 km away

From the USGS Earthquake Hazards Program and its partner networks, event uu50002440. Read Wed, Sep 23, 2026, 6:55 AM UTC.