QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

5 km ENE of Harrogate, Tennessee

· 15 km deep · released about 140 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Claiborne County 13 kmBell County 15 kmHancock County 35 kmGrainger County 38 kmKnox County 39 kmUnion County 42 kmLee County 43 kmHarlan County 44 kmWhitley 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 2.4 (md)
Depth
15 km below the surface
Felt
no reports yet
Nearest
Claiborne County, 13 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 672 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 140 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 110,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 78,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.9× the energy of this one
  4. This earthquake M 2.4 about 140 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 36.6078, -83.6013. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Claiborne County, TN 13 km (8 mi) NNE of here earthquakes near Claiborne County
Bell County, KY 15 km (9 mi) SSE of here earthquakes near Bell County
Hancock County, TN 35 km (22 mi) WNW of here earthquakes near Hancock County
Grainger County, TN 38 km (23 mi) NNW of here earthquakes near Grainger County
Knox County, KY 39 km (24 mi) SE of here earthquakes near Knox County
Union County, TN 42 km (26 mi) NNE of here earthquakes near Union County

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

Aftershocks so far

7 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

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.