QuakeIndex

Earthquake · reviewed by a seismologist

M 3.8mw

6 km S of Ridgely, Tennessee

· 7.5 km deep · released about 7.6 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lake County 15 kmDyer County 18 kmPemiscot County 28 kmObion County 34 kmNew Madrid County 46 kmFulton County 47 kmLauderdale County 51 kmCrockett County 53 kmDunklin County 53 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 3.8 (mw)
Depth
7.5 km below the surface
Felt
276 reports · strongest reported intensity VI
Measured shaking
intensity V (ShakeMap)
Nearest
Lake County, 15 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 718 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 276 people have reported feeling it to USGS.

How big was it?

This earthquake released about 7.6 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.8 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 22,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 710× the energy of this one
  4. This earthquake M 3.8 about 7.6 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 16× 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 36.2022, -89.4775. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lake County, TN 15 km (9 mi) S of here earthquakes near Lake County
Dyer County, TN 18 km (11 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 34 km (21 mi) WSW of here earthquakes near Obion County
New Madrid County, MO 46 km (29 mi) SSE of here earthquakes near New Madrid County
Fulton County, KY 47 km (29 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. 1.7 6 km SE of Marston, Missouri
  2. 1.6 5 km NW of Ridgely, Tennessee
  3. 2.0 4 km SSW of Ridgely, Tennessee
  4. 2.5 6 km SE of Ridgely, Tennessee
  5. 1.8 5 km W of Tiptonville, Tennessee
  6. 1.6 2 km SE of Ridgely, Tennessee
  7. 2.1 2 km SW of Caruthersville, Missouri
  8. 2.0 6 km ENE of Steele, Missouri
  9. 2.4 2 km NW of Ridgely, Tennessee
  10. 1.5 7 km ESE of Marston, Missouri
  11. 1.6 6 km NW of Ridgely, Tennessee
  12. 1.9 7 km ESE of Marston, Missouri
  13. 1.7 7 km SE of Marston, Missouri
  14. 1.7 8 km SSE of Ridgely, Tennessee
  15. 2.1 7 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.