Utah earthquakes

M1.5 earthquake 9 km NW of Helper, Utah

A magnitude 1.5 earthquake struck 9 km NW of Helper, Utah on Mon, Aug 31, 2020, 5:13 PM MDT (23:13 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.3 8 km ENE of Kenilworth, Utah. This one was a foreshock.

Helper forecastMore in Utah

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.5 (Md, duration), micro
Magnitude from
University of Utah Seismograph Stations
Local time
UTC
2020-08-31 23:13:09 UTC
Depth
1.7 km (1.1 mi), shallow
Epicenter
39.749° N, 110.921° W
Region
Utah
Felt reports
1
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 4.8 km horizontally, 14.8 km in depth
Magnitude uncertainty
±0.14
Depth from
Operator assigned
Station coverage gap
257°, poorly surrounded by stations
Stations used
6

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 21 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 1.58 km N of Helper, Utah · 2216 days ago · 2 km deep · 6 km away
  2. 1.910 km NW of Fairview, Utah · 2215 days ago · 7 km deep · 52 km away
  3. 1.74 km SE of Sunnyside, Utah · 2215 days ago · 2 km deep · 55 km away
  4. 1.822 km SE of Sunnyside, Utah · 2209 days ago · -3 km deep · 72 km away
  5. 1.920 km ESE of Mapleton, Utah · 2209 days ago · 8 km deep · 50 km away
  6. 2.520 km WNW of Levan, Utah · 2204 days ago · 1 km deep · 100 km away
  7. 1.719 km WNW of Levan, Utah · 2204 days ago · 0 km deep · 99 km away
  8. 2.520 km WNW of Levan, Utah · 2204 days ago · 2 km deep · 99 km away
  9. 1.819 km WNW of Levan, Utah · 2204 days ago · 4 km deep · 98 km away
  10. 1.69 km NW of Emery, Utah · 2195 days ago · -3 km deep · 94 km away
  11. 1.918 km WNW of Emery, Utah · 2192 days ago · 1 km deep · 94 km away
  12. 3.38 km ENE of Kenilworth, Utah · 2179 days ago · -3 km deep · 18 km away · felt by 3
  13. 1.77 km E of Kenilworth, Utah · 2179 days ago · -2 km deep · 18 km away
  14. 1.57 km ENE of Kenilworth, Utah · 2178 days ago · -2 km deep · 18 km away
  15. 1.712 km NW of Emery, Utah · 2178 days ago · -1 km deep · 93 km away
  16. 2.58 km ENE of Kenilworth, Utah · 2178 days ago · -2 km deep · 18 km away
  17. 1.96 km ENE of Kenilworth, Utah · 2178 days ago · -2 km deep · 17 km away
  18. 1.87 km ENE of Kenilworth, Utah · 2171 days ago · -2 km deep · 18 km away
  19. 1.719 km NW of East Carbon City, Utah · 2170 days ago · -3 km deep · 31 km away
  20. 1.914 km WNW of Emery, Utah · 2169 days ago · -1 km deep · 96 km away
  21. 2.18 km NW of Helper, UT · 2166 days ago · -3 km deep · 2 km away

Before

  1. 1.68 km NNW of Helper, Utah · 2224 days ago · 2 km deep · 4 km away
  2. 1.619 km NNW of Fayette, Utah · 2227 days ago · 14 km deep · 95 km away
  3. 1.63 km N of Scofield, Utah · 2234 days ago · 4 km deep · 21 km away
  4. 1.7Utah · 2250 days ago · 3 km deep · 81 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu60407762. Read Fri, Oct 2, 2026, 2:52 PM UTC.