QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

7 km E of Maynard, Arkansas

· 15 km deep · released about 94 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Randolph County 21 kmRipley County 26 kmClay County 36 kmGreene County 41 kmButler County 49 kmLawrence County 50 kmCarter County 59 kmOregon County 60 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 2.3 (md)
Depth
15 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 2136 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 94 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 5.8 160,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 10× the energy of this one
  4. This earthquake M 2.3 about 94 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 36.4248, -90.8170. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Randolph County, AR 21 km (13 mi) ENE of here earthquakes near Randolph County
Ripley County, MO 26 km (16 mi) SSE of here earthquakes near Ripley County
Clay County, AR 36 km (23 mi) W of here earthquakes near Clay County
Greene County, AR 41 km (25 mi) NNW of here earthquakes near Greene County
Butler County, MO 49 km (30 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

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

  1. 2.1 5 km N of Black Rock, Arkansas
  2. 1.8 3 km N of Black Rock, Arkansas
  3. 2.1 9 km NNW of Ravenden Springs, Arkansas
  4. 1.8 2 km W of Imboden, Arkansas
  5. 2.0 Missouri-Arkansas border region
  6. 2.0 2 km NNW of Black Rock, Arkansas
  7. 2.5 4 km SSW of Maynard, Arkansas
  8. 2.8 0.4 km ESE of Maynard, Arkansas
  9. 1.9 5 km S of Imboden, Arkansas
  10. 2.0 3 km SSW of Imboden, Arkansas
  11. 3.1 4 km SSW of Imboden, Arkansas
  12. 2.1 18 km WNW of Maynard, Arkansas
  13. 1.7 Missouri-Arkansas border region
  14. 1.7 2 km WSW of Imboden, Arkansas
  15. 2.1 2 km SE of Ravenden, 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.