QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

Earthquake near Aurora, UT

No earthquake was likely felt in Aurora in the 24 hours to 11:19 am MST (18:19 UTC). The last one was M 1.8, 9 km (6 mi) ESE, at 11:26 am MDT on 23 September 2026, estimated intensity II (weak) in town. Every earthquake near Aurora

This page: a magnitude 2.8 earthquake was recorded 5 km (3 mi) northwest of Aurora, UT, at 7:52 pm MDT on 24 June 2021 (01:52 UTC), 13 km deep. 2 people have reported feeling it to USGS.

USGS: 4 km NW of Aurora, Utah

7:52 pm MDT, Jun 24, 2021 · · 13 km deep · released about 400 lb of TNT

10 km30 km60 km120 km N Sevier County 26 kmSanpete County 59 kmPiute County 69 kmMillard County 100 kmEmery County 109 kmJuab County 110 kmWayne County 115 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
7:52 pm MDT on 24 June 2021 ()
Where
5 km (3 mi) northwest of Aurora, UT · earthquakes near Aurora
Magnitude
M 2.8 (ml)
Depth
13 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Sevier County, 26 km SSE
Nearest mapped fault
Maple Grove faults, 7 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 1890 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 22 km (14 mi) from the epicentre. In Aurora, 5 km away, the estimate is intensity III (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.

Likely felt in: Salina 10 km, intensity II · Richfield 22 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 400 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 38,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 27,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.4× the energy of this one
  4. This earthquake M 2.8 about 400 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 lists 2 earthquakes of M5 or more within 50 km:

  1. 5.2 0 km SSW of Central Valley, Utah · 30 km SSW of this epicentre
  2. 5.2 25 km SE of Salina, Utah · 33 km ESE 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 38.9475, -111.9762. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Sevier County, UT 26 km (16 mi) SSE earthquakes near Sevier County
Sanpete County, UT 59 km (36 mi) NE earthquakes near Sanpete County
Piute County, UT 69 km (43 mi) S earthquakes near Piute County
Millard County, UT 100 km (62 mi) W earthquakes near Millard County
Emery County, UT 109 km (68 mi) E earthquakes near Emery County
Juab County, UT 110 km (69 mi) NW earthquakes near Juab County

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

Aftershocks so far

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

  1. 1.7 10 km NW of Fayette, Utah
  2. 1.8 4 km WNW of Joseph, Utah
  3. 1.5 9 km SSE of Joseph, Utah
  4. 2.0 7 km SSE of Joseph, Utah
  5. 1.9 5 km S of Joseph, Utah
  6. 2.3 8 km NW of Fayette, Utah
  7. 1.8 8 km NW of Fayette, Utah
  8. 1.5 16 km W of Emery, Utah
  9. 1.5 16 km W of Emery, Utah
  10. 2.4 3 km NNW of Joseph, Utah
  11. 1.5 6 km S of Joseph, Utah
  12. 3.4 4 km S of Joseph, Utah
  13. 1.6 7 km SSE of Joseph, Utah
  14. 2.2 4 km S of Joseph, Utah
  15. 1.9 5 km S of Joseph, 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.