QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

16 km N of Maynardville, Tennessee

· 18 km deep · released about 91 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Union County 14 kmClaiborne County 16 kmGrainger County 29 kmCampbell County 33 kmBell County 38 kmKnox County 47 kmAnderson County 48 kmJefferson County 50 kmWhitley County 50 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 2.3 (md)
Depth
18 km below the surface
Felt
no reports yet
Nearest
Union County, 14 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 522 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 91 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 170,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 120,000× the energy of this one
  3. Around the size people start to feel M 3.0 10× the energy of this one
  4. This earthquake M 2.3 about 91 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 36.4018, -83.7940. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Union County, TN 14 km (8 mi) NNE of here earthquakes near Union County
Claiborne County, TN 16 km (10 mi) SW of here earthquakes near Claiborne County
Grainger County, TN 29 km (18 mi) WNW of here earthquakes near Grainger County
Campbell County, TN 33 km (20 mi) E of here earthquakes near Campbell County
Bell County, KY 38 km (23 mi) SSW of here earthquakes near Bell County
Knox County, TN 47 km (29 mi) NNE of here earthquakes near Knox County

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

Aftershocks so far

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

  1. 2.3 1 km W of Rutledge, Tennessee
  2. 2.0 4 km WNW of Mascot, Tennessee
  3. 1.9 3 km NW of Mascot, Tennessee
  4. 2.1 2 km S of Blaine, Tennessee
  5. 1.9 5 km NNW of Mascot, Tennessee
  6. 1.9 9 km WSW of Mascot, Tennessee
  7. 2.1 5 km ESE of Pineville, Kentucky
  8. 2.6 11 km SW of Middlesboro, Kentucky
  9. 2.2 10 km ENE of Knoxville, Tennessee
  10. 2.3 11 km ESE of Mascot, Tennessee
  11. 2.0 8 km ENE of Knoxville, Tennessee
  12. 2.3 10 km S of Jellico, 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.