QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

Earthquake near Enoch, UT

No earthquake was likely felt in Enoch in the 24 hours to 12:25 am MST (07:25 UTC). The last one was M 2.2, 8 km (5 mi) NW, at 10:46 am MST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Enoch

This page: a magnitude 1.5 earthquake was recorded 41 km (26 mi) north-northwest of Enoch, UT, at 3:56 pm MDT on 12 July 2021 (21:56 UTC), less than 1 km deep.

USGS: 20 km WSW of Minersville, Utah

3:56 pm MDT, Jul 12, 2021 · · 0.5 km deep · released about 5.4 lb of TNT

10 km30 km60 km120 km N Beaver County 27 kmIron County 29 kmPiute County 90 kmMillard County 91 kmWashington County 102 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
3:56 pm MDT on 12 July 2021 ()
Where
41 km (26 mi) north-northwest of Enoch, UT · earthquakes near Enoch
Magnitude
M 1.5 (md)
Depth
0.5 km below the surface
Felt
no reports yet
Nearest
Beaver County, 27 km NNW
Nearest mapped fault
Mineral Mountains (west side) faults, 8 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1948 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 10 km (6 mi) from the epicentre. In Enoch, 41 km away, the estimate is intensity I (not felt). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 38.1342, -113.1310. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Beaver County, UT 27 km (17 mi) NNW earthquakes near Beaver County
Iron County, UT 29 km (18 mi) SSW earthquakes near Iron County
Piute County, UT 90 km (56 mi) ENE earthquakes near Piute County
Millard County, UT 91 km (57 mi) N earthquakes near Millard County
Washington County, UT 102 km (63 mi) SSW earthquakes near Washington County
Sevier County, UT 134 km (83 mi) ENE earthquakes near Sevier County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

57 earthquakes have been recorded within 50 km since this one.

  1. 1.9 7 km S of Summit, Utah
  2. 2.1 9 km W of Enoch, Utah
  3. 1.5 18 km ENE of Milford, Utah
  4. 1.6 5 km WNW of Summit, Utah
  5. 2.1 16 km WNW of Enoch, Utah
  6. 1.6 8 km S of Beaver, Utah
  7. 2.0 Utah
  8. 2.0 16 km SE of Minersville, Utah
  9. 1.6 2 km S of Summit, Utah
  10. 2.1 3 km SW of Summit, Utah
  11. 2.7 2 km SSW of Summit, Utah
  12. 2.5 1 km WSW of Summit, Utah
  13. 1.7 3 km ESE of Beaver, Utah
  14. 1.6 3 km WNW of Summit, Utah
  15. 1.7 14 km S of Beaver, Utah

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.