QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

12 km SE of Ridgely, Tennessee

· 11 km deep · released about 2,000 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Dyer County 15 kmLake County 19 kmObion County 29 kmPemiscot County 36 kmFulton County 44 kmGibson County 46 kmCrockett County 46 kmNew Madrid County 52 kmLauderdale 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 3.2 (md)
Depth
11 km below the surface
Felt
152 reports · strongest reported intensity IV
Nearest
Dyer County, 15 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1055 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 152 people have reported feeling it to USGS.

How big was it?

This earthquake released about 2,000 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 170,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 7,700× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,400× the energy of this one
  4. This earthquake M 3.2 about 2,000 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 2.1× more

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 36.1852, -89.3807. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Dyer County, TN 15 km (9 mi) N of here earthquakes near Dyer County
Lake County, TN 19 km (12 mi) SSE of here earthquakes near Lake County
Obion County, TN 29 km (18 mi) SW of here earthquakes near Obion County
Pemiscot County, MO 36 km (23 mi) E of here earthquakes near Pemiscot County
Fulton County, KY 44 km (28 mi) SSW of here earthquakes near Fulton County
Gibson County, TN 46 km (28 mi) WNW of here earthquakes near Gibson County

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

Aftershocks so far

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

  1. 1.8 7 km ESE of Marston, Missouri
  2. 1.7 southeastern Missouri
  3. 1.8 9 km NW of Tiptonville, Tennessee
  4. 1.8 6 km ESE of Marston, Missouri
  5. 2.3 7 km NNW of Tiptonville, Tennessee
  6. 2.0 southeastern Missouri
  7. 2.1 6 km ENE of Steele, Missouri
  8. 2.0 3 km SSE of Holland, Missouri
  9. 1.6 8 km NNW of Tiptonville, Tennessee
  10. 2.2 5 km ENE of Steele, Missouri
  11. 1.6 4 km WNW of Ridgely, Tennessee
  12. 1.5 6 km SE of Tiptonville, Tennessee
  13. 1.7 7 km SSW of Ridgely, Tennessee
  14. 1.7 2 km S of Howardville, Missouri
  15. 1.6 4 km SW of Samburg, 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.