QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1md

29 km WSW of Kanosh, Utah

· -1.0 km deep · released about 1,500 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Millard County 40 kmBeaver County 59 kmPiute County 71 kmSevier County 83 kmIron County 103 kmJuab County 109 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 3.1 (md)
Depth
-1.0 km below the surface
Felt
no reports yet
Measured shaking
intensity IV (ShakeMap)
Nearest
Millard County, 40 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2595 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 1,500 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 220,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 9,800× the energy of this one
  3. Magna, Utah 2020 M 5.7 6,900× the energy of this one
  4. This earthquake M 3.1 about 1,500 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.6× more

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 38.7380, -112.7708. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Millard County, UT 40 km (25 mi) SE of here earthquakes near Millard County
Beaver County, UT 59 km (36 mi) NE of here earthquakes near Beaver County
Piute County, UT 71 km (44 mi) NW of here earthquakes near Piute County
Sevier County, UT 83 km (52 mi) W of here earthquakes near Sevier County
Iron County, UT 103 km (64 mi) NNE of here earthquakes near Iron County
Juab County, UT 109 km (67 mi) S of here earthquakes near Juab County

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

Aftershocks so far

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

  1. 1.5 20 km ENE of Milford, Utah
  2. 1.6 9 km NNE of Beaver, Utah
  3. 2.3 23.9 km NNE of Kanosh, UT
  4. 1.8 23 km SSW of Kanosh, Utah
  5. 1.5 26 km SSW of Kanosh, Utah
  6. 1.7 9 km NNW of Joseph, Utah
  7. 2.4 26 km SSW of Kanosh, Utah
  8. 1.6 19 km ENE of Milford, Utah
  9. 1.8 19 km SW of Kanosh, Utah
  10. 1.5 18 km SW of Kanosh, Utah
  11. 1.6 10 km NNE of Minersville, Utah
  12. 1.5 25 km SSW of Kanosh, Utah
  13. 1.6 19 km ENE of Milford, Utah
  14. 2.5 20 km ENE of Milford, Utah
  15. 2.0 28 km SW of Kanosh, 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 4.1 on 2019-04-14 — it released about 24 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.