QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

1 km W of Risco, Missouri

· 5.0 km deep · released about 44 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N New Madrid County 17 kmStoddard County 35 kmPemiscot County 38 kmLake County 40 kmDunklin County 49 kmButler County 54 kmClay County 56 kmMississippi County 57 kmFulton County 58 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
5.0 km below the surface
Felt
no reports yet
Nearest
New Madrid County, 17 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1937 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 36.5512, -89.8352. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
New Madrid County, MO 17 km (10 mi) WSW of here earthquakes near New Madrid County
Stoddard County, MO 35 km (22 mi) SSE of here earthquakes near Stoddard County
Pemiscot County, MO 38 km (24 mi) N of here earthquakes near Pemiscot County
Lake County, TN 40 km (25 mi) NW of here earthquakes near Lake County
Dunklin County, MO 49 km (30 mi) NNE of here earthquakes near Dunklin County
Butler County, MO 54 km (33 mi) ESE of here earthquakes near Butler County

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

Aftershocks so far

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

  1. 2.8 8 km ENE of Steele, Missouri
  2. 1.8 4 km ESE of Ridgely, Tennessee
  3. 1.6 9 km SE of Matthews, Missouri
  4. 2.1 7 km ENE of Steele, Missouri
  5. 1.8 4 km WNW of Marston, Missouri
  6. 1.7 4 km N of Ridgely, Tennessee
  7. 2.1 3 km E of Marston, Missouri
  8. 1.9 7 km SW of Tiptonville, Tennessee
  9. 1.7 4 km SE of Ridgely, Tennessee
  10. 1.7 5 km ESE of Marston, Missouri
  11. 1.9 1 km W of Howardville, Missouri
  12. 1.5 8 km ESE of Matthews, Missouri
  13. 1.8 5 km SE of Marston, Missouri
  14. 1.9 4 km SSE of Ridgely, Tennessee
  15. 2.2 1 km WSW of Tiptonville, Tennessee

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.