QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

3 km SSE of Ridgely, Tennessee

· 5.2 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lake County 12 kmDyer County 21 kmPemiscot County 28 kmObion County 33 kmNew Madrid County 44 kmFulton County 44 kmDunklin County 54 kmLauderdale County 54 kmCrockett County 55 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 2.4 (md)
Depth
5.2 km below the surface
Felt
6 reports · strongest reported intensity II
Nearest
Lake County, 12 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3434 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 6 people have reported feeling it to USGS.

How big was it?

This earthquake released about 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 120,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 86,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.7× the energy of this one
  4. This earthquake M 2.4 about 120 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 36.2308, -89.4733. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lake County, TN 12 km (7 mi) S of here earthquakes near Lake County
Dyer County, TN 21 km (13 mi) NNW of here earthquakes near Dyer County
Pemiscot County, MO 28 km (17 mi) E of here earthquakes near Pemiscot County
Obion County, TN 33 km (20 mi) WSW of here earthquakes near Obion County
New Madrid County, MO 44 km (27 mi) SSE of here earthquakes near New Madrid County
Fulton County, KY 44 km (27 mi) SW of here earthquakes near Fulton County

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

Aftershocks so far

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

  1. 2.2 2 km NW of Marston, Missouri
  2. 1.5 8 km NW of Ridgely, Tennessee
  3. 3.2 8 km SSE of Marston, Missouri
  4. 2.9 5 km WNW of Tiptonville, Tennessee
  5. 1.8 3 km WNW of Marston, Missouri
  6. 1.8 7 km WNW of Marston, Missouri
  7. 2.3 6 km SW of Caruthersville, Missouri
  8. 2.0 4 km N of Ridgely, Tennessee
  9. 3.0 4 km N of Ridgely, Tennessee
  10. 1.9 3 km NW of Marston, Missouri
  11. 1.8 7 km NW of Tiptonville, Tennessee
  12. 1.8 4 km N of Ridgely, Tennessee
  13. 1.9 7 km S of Ridgely, Tennessee
  14. 2.9 8 km SSE of Marston, Missouri
  15. 1.7 8 km NW 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

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