QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

Arkansas

· 18 km deep · released about 37 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mississippi County 8 kmDunklin County 35 kmLauderdale County 38 kmTipton County 46 kmPemiscot County 47 kmCraighead County 54 kmGreene County 57 kmDyer County 62 kmPoinsett County 65 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
18 km below the surface
Felt
8 reports · strongest reported intensity III
Nearest
Mississippi County, 8 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 959 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 8 people have reported feeling it to USGS.

How big was it?

This earthquake released about 37 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 5.8 410,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 290,000× the energy of this one
  3. Around the size people start to feel M 3.0 26× the energy of this one
  4. This earthquake M 2.1 about 37 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 35.8368, -90.0372. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mississippi County, AR 8 km (5 mi) N of here earthquakes near Mississippi County
Dunklin County, MO 35 km (22 mi) S of here earthquakes near Dunklin County
Lauderdale County, TN 38 km (24 mi) WNW of here earthquakes near Lauderdale County
Tipton County, TN 46 km (28 mi) NW of here earthquakes near Tipton County
Pemiscot County, MO 47 km (29 mi) SSW of here earthquakes near Pemiscot County
Craighead County, AR 54 km (33 mi) E of here earthquakes near Craighead County

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

Aftershocks so far

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

  1. 1.9 6 km N of Etowah, Arkansas
  2. 2.3 2 km WSW of Lake City, Arkansas
  3. 2.2 1 km NNW of Cooter, Missouri
  4. 2.1 3 km WSW of Blytheville, Arkansas
  5. 2.8 8 km W of Henning, Tennessee
  6. 2.5 6 km NNE of Dell, Arkansas
  7. 1.5 3 km E of Steele, Missouri
  8. 2.1 3 km E of Steele, Missouri
  9. 3.7 2 km E of Steele, Missouri
  10. 1.8 4 km ENE of Dell, Arkansas
  11. 1.6 9 km NE of Etowah, Arkansas
  12. 2.1 2 km SW of Caruthersville, Missouri
  13. 2.0 6 km ENE of Steele, Missouri
  14. 2.3 9 km ENE of Steele, Missouri
  15. 1.9 4 km SSW of Caruthersville, Missouri

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.