QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

4 km NW of Mount Pleasant, Arkansas

· 1.6 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Izard County 16 kmIndependence County 35 kmStone County 35 kmSharp County 35 kmFulton County 44 kmCleburne County 48 kmBaxter County 59 kmLawrence County 62 kmJackson 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 2.1 (md)
Depth
1.6 km below the surface
Felt
1 report · strongest reported intensity IV
Nearest
Izard County, 16 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1640 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 43 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 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 43 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 35.9872, -91.7882. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Izard County, AR 16 km (10 mi) SE of here earthquakes near Izard County
Independence County, AR 35 km (21 mi) NW of here earthquakes near Independence County
Stone County, AR 35 km (22 mi) ENE of here earthquakes near Stone County
Sharp County, AR 35 km (22 mi) SW of here earthquakes near Sharp County
Fulton County, AR 44 km (27 mi) S of here earthquakes near Fulton County
Cleburne County, AR 48 km (30 mi) NNE of here earthquakes near Cleburne County

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

Aftershocks so far

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

  1. 2.0 8 km ESE of Ash Flat, Arkansas
  2. 1.7 4 km SSW of Strawberry, Arkansas
  3. 1.9 10 km W of Smithville, Arkansas
  4. 2.0 4 km E of Strawberry, Arkansas
  5. 2.0 4 km N of Evening Shade, Arkansas
  6. 1.8 5 km SSW of Strawberry, Arkansas
  7. 2.2 4 km SW of Strawberry, Arkansas
  8. 1.7 10 km NW of Smithville, Arkansas
  9. 2.1 5 km S of Strawberry, Arkansas
  10. 1.8 3 km SE of Strawberry, Arkansas
  11. 2.2 0 km SSE of Strawberry, Arkansas
  12. 1.8 5 km SSW of Strawberry, Arkansas
  13. 2.1 5 km SSW of Strawberry, Arkansas
  14. 1.8 9 km SSW of Williford, Arkansas
  15. 2.2 8 km SW of Williford, 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.