QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Cedar City, UT

No earthquake was likely felt in Cedar City in the 24 hours to 11:59 pm MST (06:59 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 1.8 earthquake was recorded 46 km (29 mi) east-southeast of Cedar City, UT, at 2:16 pm MDT on 18 July 2020 (20:16 UTC), 15 km deep.

USGS: 13 km SW of Hatch, Utah

2:16 pm MDT, Jul 18, 2020 · · 15 km deep · released about 13 lb of TNT

10 km30 km60 km120 km N Kane County 73 kmIron County 76 kmWashington County 89 kmPiute County 93 kmGarfield County 101 kmBeaver County 106 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
2:16 pm MDT on 18 July 2020 ()
Where
46 km (29 mi) east-southeast of Cedar City, UT · earthquakes near Cedar City
Magnitude
M 1.8 (ml)
Depth
15 km below the surface
Felt
no reports yet
Nearest
Kane County, 73 km ESE
Nearest mapped fault
Sevier/Toroweap fault, 13 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 2307 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Cedar City, 46 km away, the estimate is intensity I (not felt). 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: Panguitch.

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

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 37.5738, -112.5567. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kane County, UT 73 km (46 mi) ESE earthquakes near Kane County
Iron County, UT 76 km (47 mi) WNW earthquakes near Iron County
Washington County, UT 89 km (55 mi) WSW earthquakes near Washington County
Piute County, UT 93 km (58 mi) NNE earthquakes near Piute County
Garfield County, UT 101 km (63 mi) ENE earthquakes near Garfield County
Beaver County, UT 106 km (66 mi) NW earthquakes near Beaver 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. 1.8 8 km ENE of Kanarraville, Utah
  2. 1.8 11 km ESE of Paragonah, Utah
  3. 2.1 4 km S of Alton, Utah
  4. 1.6 14 km NW of Panguitch, Utah
  5. 1.9 9 km S of Cedar City, Utah
  6. 1.5 15 km SE of Kanarraville, Utah
  7. 1.6 5 km NNW of Summit, Utah
  8. 1.6 2 km N of Enoch, Utah
  9. 1.7 1 km NNE of Enoch, Utah
  10. 1.5 4 km W of Summit, Utah
  11. 1.6 1 km ENE of Enoch, Utah
  12. 1.5 Utah
  13. 3.0 3 km N of Enoch, Utah
  14. 1.6 2 km SSE of Summit, Utah
  15. 3.0 2 km SSW of Summit, 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.