QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

5 km NE of Maynard, Arkansas

· 3.7 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Randolph County 20 kmRipley County 21 kmClay County 41 kmGreene County 46 kmButler County 50 kmLawrence County 51 kmCarter County 55 kmOregon County 55 kmSharp County 64 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 2.6 (md)
Depth
3.7 km below the surface
Felt
no reports yet
Nearest
Randolph County, 20 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2078 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 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 36.4590, -90.8570. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Randolph County, AR 20 km (13 mi) NE of here earthquakes near Randolph County
Ripley County, MO 21 km (13 mi) S of here earthquakes near Ripley County
Clay County, AR 41 km (25 mi) WNW of here earthquakes near Clay County
Greene County, AR 46 km (28 mi) NW of here earthquakes near Greene County
Butler County, MO 50 km (31 mi) SW of here earthquakes near Butler County
Lawrence County, AR 51 km (32 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

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

  1. 2.0 Missouri-Arkansas border region
  2. 2.0 2 km NNW of Black Rock, Arkansas
  3. 2.5 4 km SSW of Maynard, Arkansas
  4. 2.8 0.4 km ESE of Maynard, Arkansas
  5. 1.9 5 km S of Imboden, Arkansas
  6. 2.0 3 km SSW of Imboden, Arkansas
  7. 3.1 4 km SSW of Imboden, Arkansas
  8. 2.1 18 km WNW of Maynard, Arkansas
  9. 2.3 6 km WSW of Ravenden, Arkansas
  10. 1.7 Missouri-Arkansas border region
  11. 1.7 2 km WSW of Imboden, Arkansas
  12. 2.1 2 km SE of Ravenden, Arkansas
  13. 1.9 3 km ESE of Ravenden, Arkansas
  14. 1.8 Missouri-Arkansas border region
  15. 2.2 4 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.