QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

Earthquake near Enterprise, UT

No earthquake was likely felt in Enterprise in the 24 hours to 7:34 am MST (14:34 UTC). The last one was M 1.9, 14 km (9 mi) SSW, at 1:11 am MDT on 29 March 2026, estimated intensity II (weak) in town. Every earthquake near Enterprise

This page: a magnitude 1.8 earthquake was recorded 15 km (9 mi) west-southwest of Enterprise, UT, at 6:40 am MDT on 7 July 2019 (12:40 UTC), 5.7 km deep.

USGS: 14 km WSW of Enterprise, Utah

53 km (33 mi) NNW of St. George, UT

6:40 am MDT, Jul 7, 2019 · · 5.7 km deep · released about 13 lb of TNT

10 km30 km60 km120 km N Washington County 42 kmIron County 66 kmLincoln County 90 kmBeaver County 109 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
6:40 am MDT on 7 July 2019 ()
Where
15 km (9 mi) west-southwest of Enterprise, UT · earthquakes near Enterprise
Magnitude
M 1.8 (md)
Depth
5.7 km below the surface
Felt
no reports yet
Nearest
Washington County, 42 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2684 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 12 km (7 mi) from the epicentre. In Enterprise, 15 km away, the estimate is intensity II (weak). 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 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 840,000× the energy of this one
  3. Around the size people start to feel M 3.0 75× the energy of this one
  4. This earthquake M 1.8 about 13 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

The largest earthquake within 50 km since 2016 was M 4.2 on 2016-01-15 — about 5,400 times the energy of this one.

Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:

  1. 6.3 Near Pine Valley, Utah · 34 km ESE of this epicentre
  2. 5.9 38 km ESE of Caliente, Nevada · 27 km WSW of this epicentre
  3. 5.3 36 km SE of Caliente, Nevada · 32 km WSW of this epicentre
  4. 5.2 36 km SE of Caliente, Nevada · 32 km WSW of this epicentre

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 37.5023, -113.8575. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Washington County, UT 42 km (26 mi) SE earthquakes near Washington County
Iron County, UT 66 km (41 mi) NE earthquakes near Iron County
Lincoln County, NV 90 km (56 mi) W earthquakes near Lincoln County
Beaver County, UT 109 km (68 mi) NNE earthquakes near Beaver County

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

Aftershocks so far

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

  1. 1.9 24 km WSW of Enterprise, Utah
  2. 2.0 21 km WSW of Enterprise, Utah
  3. 2.4 22 km WSW of Enterprise, Utah
  4. 2.1 20 km WSW of Enterprise, Utah
  5. 2.4 20 km WSW of Enterprise, Utah
  6. 2.1 20 km WSW of Enterprise, Utah
  7. 1.6 20 km W of Enterprise, Utah
  8. 1.6 11 km NNE of Pine Valley, Utah
  9. 2.0 12 km NNE of Pine Valley, Utah
  10. 1.6 12 km NNE of Pine Valley, Utah
  11. 2.7 10 km NNE of Pine Valley, Utah
  12. 1.6 12 km NNE of Pine Valley, Utah
  13. 2.1 Utah
  14. 3.8 11 km N of Pine Valley, Utah
  15. 1.5 12 km E of Pine Valley, 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.