QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

6 km S of Marston, Missouri

· 14 km deep · released about 38 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N New Madrid County 15 kmLake County 19 kmPemiscot County 32 kmFulton County 40 kmObion County 44 kmDyer County 50 kmMississippi County 50 kmStoddard County 52 kmDunklin County 52 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
14 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
New Madrid County, 15 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1216 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 38 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 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 36.4630, -89.6242. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
New Madrid County, MO 15 km (9 mi) S of here earthquakes near New Madrid County
Lake County, TN 19 km (12 mi) NW of here earthquakes near Lake County
Pemiscot County, MO 32 km (20 mi) NNE of here earthquakes near Pemiscot County
Fulton County, KY 40 km (25 mi) WSW of here earthquakes near Fulton County
Obion County, TN 44 km (27 mi) WNW of here earthquakes near Obion County
Dyer County, TN 50 km (31 mi) NNW of here earthquakes near Dyer County

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

Aftershocks so far

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

  1. 1.6 10 km SE of Ridgely, Tennessee
  2. 1.6 0 km NW of Howardville, Missouri
  3. 1.6 4 km NW of Marston, Missouri
  4. 1.7 southeastern Missouri
  5. 1.7 7 km S of Catron, Missouri
  6. 2.4 9 km NW of Tiptonville, Tennessee
  7. 2.1 3 km ESE of Hayward, Missouri
  8. 2.0 6 km NNW of Ridgely, Tennessee
  9. 1.9 9 km ENE of Steele, Missouri
  10. 1.6 6 km E of Marston, Missouri
  11. 1.7 1 km NNW of Cooter, Missouri
  12. 1.8 southeastern Missouri
  13. 1.6 6 km NE of Caruthersville, Missouri
  14. 1.7 8 km SE of Matthews, Missouri
  15. 2.6 southeastern 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.