QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

6 km E of Maynard, Arkansas

· 9.6 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Randolph County 21 kmRipley County 25 kmClay County 37 kmGreene County 42 kmButler County 49 kmLawrence County 50 kmCarter County 58 kmOregon County 59 kmSharp County 65 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
9.6 km below the surface
Felt
no reports yet
Nearest
Randolph County, 21 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2180 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 120 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 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 92,000× the energy of this one
  3. Around the size people start to feel M 3.0 8.2× the energy of this one
  4. This earthquake M 2.4 about 120 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 36.4305, -90.8252. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Randolph County, AR 21 km (13 mi) ENE of here earthquakes near Randolph County
Ripley County, MO 25 km (15 mi) S of here earthquakes near Ripley County
Clay County, AR 37 km (23 mi) W of here earthquakes near Clay County
Greene County, AR 42 km (26 mi) NW of here earthquakes near Greene County
Butler County, MO 49 km (31 mi) SW of here earthquakes near Butler County
Lawrence County, AR 50 km (31 mi) NNE of here earthquakes near Lawrence 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. 2.0 3 km SSW of Imboden, Arkansas
  2. 3.1 4 km SSW of Imboden, Arkansas
  3. 2.1 18 km WNW of Maynard, Arkansas
  4. 1.7 Missouri-Arkansas border region
  5. 1.7 2 km WSW of Imboden, Arkansas
  6. 2.1 2 km SE of Ravenden, Arkansas
  7. 1.9 3 km ESE of Ravenden, Arkansas
  8. 1.8 Missouri-Arkansas border region
  9. 2.2 4 km WNW of Powhatan, Arkansas
  10. 2.1 5 km WNW of Powhatan, Arkansas
  11. 2.1 6 km WNW of Powhatan, Arkansas
  12. 1.6 4 km NE of Black Rock, Arkansas
  13. 1.8 5 km WNW of Powhatan, Arkansas
  14. 1.5 5 km WNW of Powhatan, Arkansas
  15. 2.2 6 km WNW of Powhatan, 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

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