QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

0 km WNW of Blytheville, Arkansas

· 9.4 km deep · released about 44 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mississippi County 21 kmDunklin County 27 kmLauderdale County 33 kmPemiscot County 34 kmDyer County 50 kmTipton County 51 kmLake County 60 kmGreene County 61 kmCraighead County 64 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
9.4 km below the surface
Felt
no reports yet
Nearest
Mississippi County, 21 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2378 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 44 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 5.8 340,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 240,000× 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 44 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 35.9310, -89.9287. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mississippi County, AR 21 km (13 mi) NNE of here earthquakes near Mississippi County
Dunklin County, MO 27 km (17 mi) SSE of here earthquakes near Dunklin County
Lauderdale County, TN 33 km (20 mi) NW of here earthquakes near Lauderdale County
Pemiscot County, MO 34 km (21 mi) SSW of here earthquakes near Pemiscot County
Dyer County, TN 50 km (31 mi) WSW of here earthquakes near Dyer County
Tipton County, TN 51 km (32 mi) NNW of here earthquakes near Tipton County

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

Aftershocks so far

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

  1. 2.1 10 km SSE of Ridgely, Tennessee
  2. 2.3 3 km N of Gilt Edge, Tennessee
  3. 2.3 14 km SE of Caruthersville, Missouri
  4. 1.8 3 km SSW of Caruthersville, Missouri
  5. 1.8 9 km ENE of Steele, Missouri
  6. 2.2 6 km ENE of Steele, Missouri
  7. 1.7 3 km E of Steele, Missouri
  8. 1.7 3 km ENE of Caruthersville, Missouri
  9. 1.9 6 km ENE of Steele, Missouri
  10. 1.8 3 km SW of Blytheville, Arkansas
  11. 1.9 9 km SE of Wilson, Arkansas
  12. 2.7 6 km ENE of Steele, Missouri
  13. 2.6 6 km ENE of Steele, Missouri
  14. 1.9 1 km NNW of Cooter, Missouri
  15. 1.7 5 km ENE of Caraway, 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.