QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

11 km NNW of Maynard, Arkansas

· 6.0 km deep · released about 110 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ripley County 16 kmRandolph County 21 kmOregon County 46 kmCarter County 48 kmClay County 49 kmButler County 52 kmLawrence County 55 kmGreene County 55 kmSharp County 61 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 2.4 (md)
Depth
6.0 km below the surface
Felt
no reports yet
Nearest
Ripley County, 16 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2142 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 110 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 140,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 99,000× the energy of this one
  3. Around the size people start to feel M 3.0 8.8× the energy of this one
  4. This earthquake M 2.4 about 110 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 36.5158, -90.9345. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ripley County, MO 16 km (10 mi) SSW of here earthquakes near Ripley County
Randolph County, AR 21 km (13 mi) NNE of here earthquakes near Randolph County
Oregon County, MO 46 km (28 mi) ESE of here earthquakes near Oregon County
Carter County, MO 48 km (30 mi) S of here earthquakes near Carter County
Clay County, AR 49 km (30 mi) WNW of here earthquakes near Clay County
Butler County, MO 52 km (33 mi) WSW of here earthquakes near Butler County

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

Aftershocks so far

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

  1. 1.8 2 km SW of Ravenden, Arkansas
  2. 2.1 7 km E of Alton, Missouri
  3. 2.0 5 km N of Black Rock, Arkansas
  4. 1.7 3 km N of Black Rock, Arkansas
  5. 2.4 7 km SW of Ravenden, Arkansas
  6. 2.3 7 km SSW of Ravenden, Arkansas
  7. 2.1 5 km N of Black Rock, Arkansas
  8. 1.8 3 km N of Black Rock, Arkansas
  9. 2.1 9 km NNW of Ravenden Springs, Arkansas
  10. 1.8 2 km W of Imboden, Arkansas
  11. 2.0 Missouri-Arkansas border region
  12. 2.0 2 km NNW of Black Rock, Arkansas
  13. 2.5 4 km SSW of Maynard, Arkansas
  14. 2.8 0.4 km ESE of Maynard, Arkansas
  15. 1.9 5 km S of Imboden, Arkansas

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.