QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

3 km SSW of Fourche, Arkansas

· 9.8 km deep · released about 46 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Perry County 27 kmFaulkner County 33 kmConway County 34 kmSaline County 35 kmPulaski County 36 kmGarland County 64 kmPope County 66 kmVan Buren County 70 kmLonoke County 71 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 2.1 (md)
Depth
9.8 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Perry County, 27 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1512 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 46 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 330,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 21× the energy of this one
  4. This earthquake M 2.1 about 46 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 34.9647, -92.6287. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Perry County, AR 27 km (17 mi) E of here earthquakes near Perry County
Faulkner County, AR 33 km (21 mi) SW of here earthquakes near Faulkner County
Conway County, AR 34 km (21 mi) S of here earthquakes near Conway County
Saline County, AR 35 km (22 mi) N of here earthquakes near Saline County
Pulaski County, AR 36 km (22 mi) NW of here earthquakes near Pulaski County
Garland County, AR 64 km (40 mi) NE of here earthquakes near Garland County

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

Aftershocks so far

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

  1. 1.7 4 km SW of Avilla, Arkansas
  2. 2.3 4 km WSW of Avilla, Arkansas
  3. 2.3 3 km NE of Greenbrier, Arkansas
  4. 2.0 3 km SSE of Guy, Arkansas
  5. 2.0 1 km SW of Pottsville, Arkansas
  6. 1.8 2 km WNW of Enola, Arkansas
  7. 2.2 10 km WSW of Center Ridge, Arkansas
  8. 1.9 5 km W of Damascus, Arkansas
  9. 2.1 5 km NNE of Greenbrier, Arkansas
  10. 1.8 6 km SSW of Perryville, Arkansas
  11. 2.0 8 km SW of Perryville, Arkansas
  12. 2.3 Arkansas
  13. 2.0 8 km SSW of Perryville, Arkansas
  14. 2.1 6 km SSW of Perryville, Arkansas
  15. 2.3 6 km ESE of Center Ridge, 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.