QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

8 km SW of Williford, Arkansas

· 3.4 km deep · released about 54 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sharp County 5 kmLawrence County 33 kmRandolph County 38 kmFulton County 42 kmIzard County 46 kmIndependence County 52 kmOregon County 55 kmJackson County 68 kmRipley County 70 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 2.2 (md)
Depth
3.4 km below the surface
Felt
4 reports · strongest reported intensity V
Nearest
Sharp County, 5 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 519 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 4 people have reported feeling it to USGS.

How big was it?

This earthquake released about 54 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 280,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 200,000× the energy of this one
  3. Around the size people start to feel M 3.0 18× the energy of this one
  4. This earthquake M 2.2 about 54 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 36.1908, -91.4143. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sharp County, AR 5 km (3 mi) ENE of here earthquakes near Sharp County
Lawrence County, AR 33 km (20 mi) WNW of here earthquakes near Lawrence County
Randolph County, AR 38 km (24 mi) WSW of here earthquakes near Randolph County
Fulton County, AR 42 km (26 mi) ESE of here earthquakes near Fulton County
Izard County, AR 46 km (29 mi) ENE of here earthquakes near Izard County
Independence County, AR 52 km (32 mi) NNE of here earthquakes near Independence 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. 1.9 2 km N of Strawberry, Arkansas
  2. 1.7 3 km NW of Mount Pleasant, Arkansas
  3. 1.8 3 km NW of Mount Pleasant, Arkansas
  4. 2.4 4 km WNW of Mount Pleasant, Arkansas
  5. 2.1 3 km NW of Mount Pleasant, Arkansas
  6. 2.2 3 km N of Strawberry, Arkansas
  7. 1.6 3 km NE of Strawberry, Arkansas
  8. 1.8 4 km NNW of Strawberry, Arkansas
  9. 1.6 3 km N of Strawberry, Arkansas
  10. 1.9 3 km N of Strawberry, Arkansas
  11. 2.1 5 km SSW of Strawberry, Arkansas
  12. 1.8 9 km W of Maynard, Arkansas
  13. 1.9 9 km SW of Koshkonong, Missouri
  14. 2.2 2 km W of Lynn, Arkansas
  15. 1.8 2 km SW of Lynn, 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.