QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

4 km E of Harrogate, Tennessee

· 14 km deep · released about 72 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Claiborne County 11 kmBell County 17 kmHancock County 34 kmGrainger County 35 kmUnion County 40 kmKnox County 40 kmLee County 44 kmHarlan County 45 kmHamblen County 51 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
14 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Claiborne County, 11 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1496 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 72 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 5.8 210,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 150,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 72 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 36.5873, -83.6027. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Claiborne County, TN 11 km (7 mi) NNE of here earthquakes near Claiborne County
Bell County, KY 17 km (11 mi) SSE of here earthquakes near Bell County
Hancock County, TN 34 km (21 mi) WNW of here earthquakes near Hancock County
Grainger County, TN 35 km (22 mi) NNW of here earthquakes near Grainger County
Union County, TN 40 km (25 mi) NNE of here earthquakes near Union County
Knox County, KY 40 km (25 mi) SE of here earthquakes near Knox County

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

Aftershocks so far

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

  1. 2.3 1 km W of Rutledge, Tennessee
  2. 2.1 5 km ESE of Pineville, Kentucky
  3. 2.6 11 km SW of Middlesboro, Kentucky
  4. 2.5 9 km NE of Flat Lick, Kentucky
  5. 2.3 10 km S of Jellico, Tennessee
  6. 2.3 16 km N of Maynardville, Tennessee
  7. 2.4 5 km NNE of Bean Station, Tennessee
  8. 2.4 5 km ENE of Harrogate, Tennessee
  9. 2.3 2 km ENE of Rutledge, Tennessee
  10. 2.1 9 km ENE of Rutledge, Tennessee
  11. 1.8 12 km W of New Tazewell, Tennessee
  12. 2.1 7 km ENE of Rutledge, Tennessee
  13. 1.9 8 km WNW of Rutledge, Tennessee
  14. 2.4 2 km ESE of Rutledge, Tennessee
  15. 2.4 7 km ENE of Blaine, 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.