QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

5 km SE of Grandin, Missouri

· 11 km deep · released about 82 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ripley County 17 kmCarter County 22 kmButler County 36 kmWayne County 46 kmRandolph County 54 kmOregon County 56 kmClay County 58 kmReynolds County 66 kmShannon County 67 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 2.3 (md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Ripley County, 17 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2018 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 82 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 82 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 36.7917, -90.7913. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ripley County, MO 17 km (11 mi) NNE of here earthquakes near Ripley County
Carter County, MO 22 km (14 mi) SE of here earthquakes near Carter County
Butler County, MO 36 km (22 mi) WNW of here earthquakes near Butler County
Wayne County, MO 46 km (29 mi) SW of here earthquakes near Wayne County
Randolph County, AR 54 km (34 mi) NNE of here earthquakes near Randolph County
Oregon County, MO 56 km (35 mi) ENE of here earthquakes near Oregon County

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

Aftershocks so far

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

  1. 2.4 14 km SE of Ellsinore, Missouri
  2. 2.9 14 km SSW of Williamsville, Missouri
  3. 2.4 7 km W of Williamsville, Missouri
  4. 2.6 12 km E of Williamsville, Missouri
  5. 1.8 9 km W of Maynard, Arkansas
  6. 2.2 4 km SSE of Maynard, Arkansas
  7. 2.9 12 km WSW of Grandin, Missouri
  8. 2.2 13 km W of Maynard, Arkansas
  9. 2.5 13 km SSW of Williamsville, Missouri
  10. 2.5 4 km E of Doniphan, Missouri
  11. 2.7 5 km E of Doniphan, Missouri
  12. 2.3 9 km ESE of Williamsville, Missouri
  13. 2.7 4 km ENE of Grandin, Missouri
  14. 2.1 7 km E of Alton, Missouri
  15. 2.4 13 km E of Williamsville, Missouri

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.