QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

2 km SW of Lynn, Arkansas

· 3.0 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lawrence County 16 kmSharp County 27 kmIndependence County 38 kmJackson County 44 kmRandolph County 45 kmIzard County 59 kmCraighead County 60 kmGreene County 65 kmFulton County 66 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
Lawrence County, 16 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 270 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 14 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 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× the energy of this one
  4. This earthquake M 1.8 about 14 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 35.9900, -91.2680. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lawrence County, AR 16 km (10 mi) WSW of here earthquakes near Lawrence County
Sharp County, AR 27 km (17 mi) SE of here earthquakes near Sharp County
Independence County, AR 38 km (24 mi) NE of here earthquakes near Independence County
Jackson County, AR 44 km (27 mi) N of here earthquakes near Jackson County
Randolph County, AR 45 km (28 mi) SSW of here earthquakes near Randolph County
Izard County, AR 59 km (37 mi) E of here earthquakes near Izard County

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

Aftershocks so far

12 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. 2.2 2 km W 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.