QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

Earthquake near Enterprise, UT

No earthquake was likely felt in Enterprise in the 24 hours to 2:23 pm MST (21:23 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 2.1 earthquake was recorded 25 km (15 mi) north-northwest of Enterprise, UT, at 1:10 pm MDT on 3 September 2022 (19:10 UTC), 6.6 km deep.

USGS: 15 km NW of Beryl Junction, Utah

82 km (51 mi) NNW of St. George, UT

1:10 pm MDT, Sep 3, 2022 · · 6.6 km deep · released about 51 lb of TNT

10 km30 km60 km120 km N Iron County 45 kmWashington County 65 kmBeaver County 80 kmLincoln County 95 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
1:10 pm MDT on 3 September 2022 ()
Where
25 km (15 mi) north-northwest of Enterprise, UT · earthquakes near Enterprise
Magnitude
M 2.1 (ml)
Depth
6.6 km below the surface
Felt
no reports yet
Nearest
Iron County, 45 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1030 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 17 km (11 mi) from the epicentre. In Enterprise, 25 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 51 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 210,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 51 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 1,400 times the energy of this one.

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 37.7883, -113.7992. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Iron County, UT 45 km (28 mi) ENE earthquakes near Iron County
Washington County, UT 65 km (40 mi) SSE earthquakes near Washington County
Beaver County, UT 80 km (50 mi) NE earthquakes near Beaver County
Lincoln County, NV 95 km (59 mi) W earthquakes near Lincoln County

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

Aftershocks so far

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

  1. 1.5 11 km NNW of Beryl Junction, Utah
  2. 2.1 13 km NNW of Beryl Junction, Utah
  3. 1.9 8 km NW of Beryl Junction, Utah
  4. 1.6 1 km SSW of Newcastle, Utah
  5. 1.6 8 km NNE of Central, Utah
  6. 1.6 8 km NNE of Central, Utah
  7. 2.6 7 km NNE of Central, Utah
  8. 1.8 8 km NNE of Central, Utah
  9. 2.5 12 km NNW of New Harmony, Utah
  10. 1.9 36 km NNE of Newcastle, Utah
  11. 2.0 11 km N of Beryl Junction, Utah
  12. 1.8 10 km WNW of Central, Utah
  13. 1.5 14 km NW of Beryl Junction, Utah
  14. 1.6 31 km W of Veyo, Utah
  15. 1.7 27 km NE of Newcastle, 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.