QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

21 km SSW of Antimony, Utah

· 6.2 km deep · released about 5.9 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Piute County 44 kmGarfield County 58 kmKane County 78 kmSevier County 93 kmWayne County 103 kmIron County 106 kmBeaver County 110 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 1.5 (ml)
Depth
6.2 km below the surface
Felt
no reports yet
Nearest
Piute County, 44 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1061 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 5.9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,800,000× the energy of this one
  3. Around the size people start to feel M 3.0 160× the energy of this one
  4. This earthquake M 1.5 about 5.9 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 37.9427, -112.1023. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Piute County, UT 44 km (27 mi) S of here earthquakes near Piute County
Garfield County, UT 58 km (36 mi) WNW of here earthquakes near Garfield County
Kane County, UT 78 km (49 mi) NNW of here earthquakes near Kane County
Sevier County, UT 93 km (58 mi) SSW of here earthquakes near Sevier County
Wayne County, UT 103 km (64 mi) WSW of here earthquakes near Wayne County
Iron County, UT 106 km (66 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

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

  1. 1.9 4 km ESE of Circleville, Utah
  2. 1.6 19 km SSW of Antimony, Utah
  3. 1.9 3 km SSW of Panguitch, Utah
  4. 2.2 19 km ENE of Antimony, Utah
  5. 2.2 14 km SE of Beaver, Utah
  6. 2.5 20 km SSW of Antimony, Utah
  7. 1.8 18 km SSW of Antimony, Utah
  8. 1.6 21 km SSE of Beaver, Utah
  9. 1.8 0 km W of Circleville, Utah
  10. 2.1 2 km NNE of Hatch, Utah
  11. 1.6 9 km W of Bryce Canyon City, Utah
  12. 1.7 9 km W of Bryce Canyon City, Utah
  13. 2.5 9 km S of Marysvale, Utah
  14. 1.8 9 km WSW of Bryce Canyon City, Utah
  15. 1.7 12 km SSE of Beaver, 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 22,000 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.