QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

2 km NNW of Black Rock, Arkansas

· 12 km deep · released about 35 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lawrence County 10 kmRandolph County 24 kmSharp County 33 kmGreene County 48 kmCraighead County 55 kmIndependence County 60 kmJackson County 61 kmRipley County 61 kmOregon County 67 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 2.0 (md)
Depth
12 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Lawrence County, 10 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1324 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 35 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 440,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 310,000× the energy of this one
  3. Around the size people start to feel M 3.0 28× the energy of this one
  4. This earthquake M 2.0 about 35 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 36.1328, -91.1058. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lawrence County, AR 10 km (6 mi) N of here earthquakes near Lawrence County
Randolph County, AR 24 km (15 mi) SSW of here earthquakes near Randolph County
Sharp County, AR 33 km (21 mi) E of here earthquakes near Sharp County
Greene County, AR 48 km (30 mi) W of here earthquakes near Greene County
Craighead County, AR 55 km (34 mi) NW of here earthquakes near Craighead County
Independence County, AR 60 km (37 mi) NE of here earthquakes near Independence County

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

Aftershocks so far

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

  1. 1.5 3 km WNW of Lynn, Arkansas
  2. 1.8 2 km W of Lynn, Arkansas
  3. 2.0 3 km WNW of Lynn, Arkansas
  4. 1.8 9 km ESE of Ash Flat, Arkansas
  5. 2.0 8 km ESE of Ash Flat, Arkansas
  6. 1.7 4 km SSW of Strawberry, Arkansas
  7. 2.1 6 km ENE of Smithville, Arkansas
  8. 1.9 10 km W of Smithville, Arkansas
  9. 2.0 4 km E of Strawberry, Arkansas
  10. 2.0 4 km N of Evening Shade, Arkansas
  11. 1.8 5 km SSW of Strawberry, Arkansas
  12. 2.2 4 km SW of Strawberry, Arkansas
  13. 1.7 10 km NW of Smithville, Arkansas
  14. 1.7 4 km ESE of Lynn, Arkansas
  15. 2.1 5 km S of Strawberry, 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.