QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

16 km S of Antimony, Utah

· 13 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Piute County 42 kmGarfield County 52 kmKane County 79 kmSevier County 88 kmWayne County 96 kmIron County 113 kmBeaver 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
Magnitude
M 1.8 (ml)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Piute County, 42 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1005 days ago

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

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.

Where

Epicentre 37.9685, -112.0185. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Piute County, UT 42 km (26 mi) SSE of here earthquakes near Piute County
Garfield County, UT 52 km (32 mi) WNW of here earthquakes near Garfield County
Kane County, UT 79 km (49 mi) NNW of here earthquakes near Kane County
Sevier County, UT 88 km (55 mi) SSW of here earthquakes near Sevier County
Wayne County, UT 96 km (59 mi) WSW of here earthquakes near Wayne County
Iron County, UT 113 km (70 mi) E of here earthquakes near Iron County

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

Aftershocks so far

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

  1. 2.1 20 km ENE of Panguitch, Utah
  2. 3.0 20 km ENE of Panguitch, Utah
  3. 1.6 20 km ENE of Panguitch, Utah
  4. 2.0 20 km ENE of Panguitch, Utah
  5. 2.1 19 km ENE of Panguitch, Utah
  6. 3.0 19 km ENE of Panguitch, Utah
  7. 1.9 8 km W of Junction, Utah
  8. 1.7 9 km NW of Panguitch, Utah
  9. 2.0 8 km WNW of Panguitch, Utah
  10. 1.6 14 km NW of Junction, Utah
  11. 1.6 10 km N of Panguitch, Utah
  12. 2.6 18 km NNW of Panguitch, Utah
  13. 2.0 2 km WNW of Circleville, Utah
  14. 2.0 19 km SW of Circleville, Utah
  15. 1.5 2 km W of Panguitch, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.4 on 2020-10-03 — it released about 9,400 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.