QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

9 km ENE of Pangburn, Arkansas

· 2.7 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N White County 23 kmCleburne County 28 kmIndependence County 35 kmJackson County 50 kmWoodruff County 54 kmStone County 57 kmFaulkner County 64 kmVan Buren County 71 kmPrairie County 72 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
2.7 km below the surface
Felt
no reports yet
Nearest
White County, 23 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3184 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 85 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 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 35.4603, -91.7452. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
White County, AR 23 km (14 mi) N of here earthquakes near White County
Cleburne County, AR 28 km (17 mi) ESE of here earthquakes near Cleburne County
Independence County, AR 35 km (22 mi) SSW of here earthquakes near Independence County
Jackson County, AR 50 km (31 mi) WSW of here earthquakes near Jackson County
Woodruff County, AR 54 km (34 mi) WNW of here earthquakes near Woodruff County
Stone County, AR 57 km (35 mi) SE of here earthquakes near Stone County

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

Aftershocks so far

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

  1. 2.3 9 km NW of Judsonia, Arkansas
  2. 2.2 12 km SSW of Pleasant Plains, Arkansas
  3. 1.8 11 km S of Pleasant Plains, Arkansas
  4. 2.9 11 km E of Pangburn, Arkansas
  5. 1.9 13 km SSE of Guion, Arkansas
  6. 2.1 3 km SW of Georgetown, Arkansas
  7. 2.1 13 km SSW of Pleasant Plains, Arkansas
  8. 2.2 12 km SSW of Pleasant Plains, Arkansas
  9. 2.0 14 km SSW of Pleasant Plains, Arkansas
  10. 2.1 12 km SSW of Pleasant Plains, Arkansas
  11. 1.8 11 km SSW of Pleasant Plains, Arkansas
  12. 1.9 11 km SW of Pleasant Plains, Arkansas
  13. 2.1 11 km NE of Pangburn, Arkansas
  14. 2.3 12 km SSW of Pleasant Plains, Arkansas
  15. 1.5 7 km S of Pleasant Plains, 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.