QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

9 km WSW of Center Ridge, Arkansas

· 3.0 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Conway County 10 kmVan Buren County 29 kmPope County 35 kmFaulkner County 37 kmPerry County 51 kmSearcy County 61 kmCleburne County 65 kmPulaski County 72 kmStone County 74 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 1.8 (md)
Depth
3.0 km below the surface
Felt
no reports yet
Nearest
Conway County, 10 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1534 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 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 810,000× the energy of this one
  3. Around the size people start to feel M 3.0 72× the energy of this one
  4. This earthquake M 1.8 about 13 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 35.3493, -92.6623. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Conway County, AR 10 km (6 mi) NNE of here earthquakes near Conway County
Van Buren County, AR 29 km (18 mi) SSW of here earthquakes near Van Buren County
Pope County, AR 35 km (22 mi) ESE of here earthquakes near Pope County
Faulkner County, AR 37 km (23 mi) NW of here earthquakes near Faulkner County
Perry County, AR 51 km (32 mi) NNE of here earthquakes near Perry County
Searcy County, AR 61 km (38 mi) S of here earthquakes near Searcy County

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

Aftershocks so far

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

  1. 2.0 17 km NNE of Hector, Arkansas
  2. 2.0 4 km SSE of Hector, Arkansas
  3. 2.3 3 km NW of Mount Vernon, Arkansas
  4. 2.3 3 km NE of Greenbrier, Arkansas
  5. 2.0 3 km SSE of Guy, Arkansas
  6. 2.0 1 km SW of Pottsville, Arkansas
  7. 2.4 11 km W of Clinton, Arkansas
  8. 1.8 2 km WNW of Enola, Arkansas
  9. 2.2 10 km WSW of Center Ridge, Arkansas
  10. 1.9 5 km W of Damascus, Arkansas
  11. 2.1 5 km NNE of Greenbrier, Arkansas
  12. 1.8 6 km SSW of Perryville, Arkansas
  13. 2.0 8 km SW of Perryville, Arkansas
  14. 2.3 Arkansas
  15. 2.0 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.