QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Richfield, UT

No earthquake was likely felt in Richfield in the 24 hours to 11:48 pm MST (06:48 UTC). The last one was M 3.2, 34 km (21 mi) W, at 8:35 am MDT on 22 April 2026, estimated intensity II (weak) in town; 6 felt reports to USGS. Every earthquake near Richfield

This page: a magnitude 1.8 earthquake was recorded 25 km (15 mi) east of Richfield, UT, at 7:14 pm MST on 17 January 2024 (02:14 UTC), 7.5 km deep.

USGS: 16 km E of Glenwood, Utah

7:14 pm MST, Jan 17, 2024 · · 7.5 km deep · released about 14 lb of TNT

10 km30 km60 km120 km N Sevier County 1 kmPiute County 55 kmSanpete County 71 kmWayne County 90 kmEmery County 98 kmGarfield County 107 kmMillard County 117 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
7:14 pm MST on 17 January 2024 ()
Where
25 km (15 mi) east of Richfield, UT · earthquakes near Richfield
Magnitude
M 1.8 (ml)
Depth
7.5 km below the surface
Felt
no reports yet
Nearest
Sevier County, 1 km SW
Nearest mapped fault
Annabella graben faults, 23 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 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 11 km (7 mi) from the epicentre. In Richfield, 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.

Earthquakes near other towns within 30 km: Aurora, Salina.

How big was it?

This earthquake released about 14 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 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× the energy of this one
  4. This earthquake M 1.8 about 14 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 3 earthquakes of M5 or more within 50 km:

  1. 5.2 0 km SSW of Central Valley, Utah · 27 km WSW of this epicentre
  2. 5.2 25 km SE of Salina, Utah · 18 km ENE of this epicentre
  3. 5.0 10 km NE of Marysvale, Utah · 40 km SW 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 38.7555, -111.8020. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Sevier County, UT 1 km (1 mi) SW earthquakes near Sevier County
Piute County, UT 55 km (34 mi) SSW earthquakes near Piute County
Sanpete County, UT 71 km (44 mi) NNE earthquakes near Sanpete County
Wayne County, UT 90 km (56 mi) SE earthquakes near Wayne County
Emery County, UT 98 km (61 mi) ENE earthquakes near Emery County
Garfield County, UT 107 km (67 mi) SSE earthquakes near Garfield County

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

Aftershocks so far

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

  1. 1.6 15 km WNW of Emery, Utah
  2. 1.8 8 km SSE of Joseph, Utah
  3. 1.5 16 km NW of Emery, Utah
  4. 2.1 6 km SSE of Joseph, Utah
  5. 1.5 22 km WSW of Emery, Utah
  6. 2.1 8 km SSE of Joseph, Utah
  7. 2.2 18 km E of Mayfield, Utah
  8. 1.8 22 km ESE of Salina, Utah
  9. 1.7 16 km NW of Emery, Utah
  10. 1.5 16 km NW of Emery, Utah
  11. 1.9 17 km WNW of Emery, Utah
  12. 2.2 4 km WNW of Elsinore, Utah
  13. 1.6 16 km NW of Emery, Utah
  14. 2.0 17 km WNW of Emery, Utah
  15. 2.0 17 km WNW of Emery, 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.