QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3md

7 km ESE of Ridgely, Tennessee

· 9.4 km deep · released about 1.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lake County 12 kmDyer County 21 kmObion County 27 kmPemiscot County 34 kmFulton County 40 kmNew Madrid County 45 kmGibson County 51 kmCrockett County 53 kmLauderdale County 57 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 3.3 (md)
Depth
9.4 km below the surface
Felt
61 reports · strongest reported intensity IV
Nearest
Lake County, 12 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1769 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 61 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 6,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,300× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.6× 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 36.2423, -89.4100. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lake County, TN 12 km (8 mi) SSE of here earthquakes near Lake County
Dyer County, TN 21 km (13 mi) N of here earthquakes near Dyer County
Obion County, TN 27 km (17 mi) WSW of here earthquakes near Obion County
Pemiscot County, MO 34 km (21 mi) E of here earthquakes near Pemiscot County
Fulton County, KY 40 km (25 mi) SSW of here earthquakes near Fulton County
New Madrid County, MO 45 km (28 mi) SSE of here earthquakes near New Madrid County

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

Aftershocks so far

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

  1. 2.3 6 km WNW of Marston, Missouri
  2. 2.0 6 km ESE of Marston, Missouri
  3. 1.7 6 km E of Hayward, Missouri
  4. 2.4 6 km SE of Tiptonville, Tennessee
  5. 2.5 6 km ENE of Steele, Missouri
  6. 2.0 4 km ESE of Ridgely, Tennessee
  7. 1.8 6 km SE of Marston, Missouri
  8. 1.5 2 km NW of Ridgely, Tennessee
  9. 1.7 10 km ESE of Marston, Missouri
  10. 1.5 11 km N of Dyersburg, Tennessee
  11. 2.4 10 km NNW of Tiptonville, Tennessee
  12. 1.7 4 km NW of Ridgely, Tennessee
  13. 1.6 3 km ENE of Risco, Missouri
  14. 1.5 6 km S of Ridgely, Tennessee
  15. 1.8 11 km ESE of Marston, 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

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