QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

9 km NNW of Moorefield, Arkansas

· 7.8 km deep · released about 58 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Independence County 13 kmSharp County 37 kmIzard County 39 kmJackson County 44 kmCleburne County 47 kmLawrence County 49 kmStone County 49 kmFulton County 62 kmWhite County 68 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
7.8 km below the surface
Felt
37 reports · strongest reported intensity III
Nearest
Independence County, 13 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1379 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 37 people have reported feeling it to USGS.

How big was it?

This earthquake released about 58 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 5.8 260,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 58 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 35.8530, -91.5937. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Independence County, AR 13 km (8 mi) NNW of here earthquakes near Independence County
Sharp County, AR 37 km (23 mi) SSW of here earthquakes near Sharp County
Izard County, AR 39 km (24 mi) SE of here earthquakes near Izard County
Jackson County, AR 44 km (27 mi) NW of here earthquakes near Jackson County
Cleburne County, AR 47 km (29 mi) NE of here earthquakes near Cleburne County
Lawrence County, AR 49 km (30 mi) WSW of here earthquakes near Lawrence County

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

Aftershocks so far

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

  1. 1.8 8 km SW of Williford, Arkansas
  2. 1.8 11 km S of Pleasant Plains, Arkansas
  3. 1.9 12 km SSW of Strawberry, Arkansas
  4. 1.8 3 km WNW of Lynn, Arkansas
  5. 2.9 11 km E of Pangburn, Arkansas
  6. 2.1 6 km SSW of Strawberry, Arkansas
  7. 2.1 5 km N of Strawberry, Arkansas
  8. 1.9 13 km SSE of Guion, Arkansas
  9. 2.1 5 km NW of Sidney, Arkansas
  10. 1.7 2 km WNW of Lynn, Arkansas
  11. 2.3 11 km NW of Strawberry, Arkansas
  12. 2.1 13 km SSW of Pleasant Plains, Arkansas
  13. 2.2 12 km SSW of Pleasant Plains, Arkansas
  14. 2.0 14 km SSW of Pleasant Plains, Arkansas
  15. 2.1 12 km SSW of Pleasant Plains, 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.