QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

Earthquake near Cedar City, UT

No earthquake was likely felt in Cedar City in the 24 hours to 9:37 am MST (16:37 UTC). The last one was M 2.2, 16 km (10 mi) N, at 10:46 am MST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Cedar City

This page: a magnitude 2.2 earthquake was recorded 24 km (15 mi) north of Cedar City, UT, at 2:59 am MST on 14 December 2021 (09:59 UTC), 8.2 km deep.

USGS: 12 km NW of Summit, Utah

2:59 am MST, Dec 14, 2021 · · 8.2 km deep · released about 67 lb of TNT

10 km30 km60 km120 km N Iron County 26 kmBeaver County 56 kmWashington County 81 kmPiute County 92 kmMillard County 119 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
2:59 am MST on 14 December 2021 ()
Where
24 km (15 mi) north of Cedar City, UT · earthquakes near Cedar City
Magnitude
M 2.2 (ml)
Depth
8.2 km below the surface
Felt
no reports yet
Nearest
Iron County, 26 km W
Nearest mapped fault
Enoch graben faults, 1 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 1794 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 Cedar City, 24 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.

Likely felt in: Enoch 13 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 67 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 230,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 160,000× the energy of this one
  3. Around the size people start to feel M 3.0 14× the energy of this one
  4. This earthquake M 2.2 about 67 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 37.8900, -113.0160. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Iron County, UT 26 km (16 mi) W earthquakes near Iron County
Beaver County, UT 56 km (35 mi) NNW earthquakes near Beaver County
Washington County, UT 81 km (50 mi) SSW earthquakes near Washington County
Piute County, UT 92 km (57 mi) ENE earthquakes near Piute County
Millard County, UT 119 km (74 mi) N earthquakes near Millard County
Kane County, UT 126 km (78 mi) ESE earthquakes near Kane County

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

Aftershocks so far

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

  1. 1.9 15 km S of Beaver, Utah
  2. 1.6 6 km S of Summit, Utah
  3. 1.9 19 km NE of Paragonah, Utah
  4. 1.5 15 km WNW of Minersville, Utah
  5. 2.1 15 km NW of Parowan, Utah
  6. 1.8 10 km SSE of Cedar City, Utah
  7. 1.9 7 km S of Summit, Utah
  8. 2.1 9 km W of Enoch, Utah
  9. 1.6 5 km WNW of Summit, Utah
  10. 1.8 19 km NNW of Panguitch, Utah
  11. 1.9 10 km ENE of Kanarraville, Utah
  12. 2.1 16 km WNW of Enoch, Utah
  13. 1.6 8 km S of Beaver, Utah
  14. 1.9 19 km SSE of Beaver, Utah
  15. 2.0 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.