QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

4 km WNW of Dandridge, Tennessee

· 13 km deep · released about 51 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jefferson County 3 kmSevier County 27 kmHamblen County 28 kmGrainger County 28 kmCocke County 33 kmKnox County 43 kmUnion County 44 kmSwain County 51 kmBlount County 56 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 2.1 (md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Jefferson County, 3 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 719 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 51 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 210,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 51 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 36.0245, -83.4605. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jefferson County, TN 3 km (2 mi) SSW of here earthquakes near Jefferson County
Sevier County, TN 27 km (17 mi) NNE of here earthquakes near Sevier County
Hamblen County, TN 28 km (17 mi) SW of here earthquakes near Hamblen County
Grainger County, TN 28 km (18 mi) S of here earthquakes near Grainger County
Cocke County, TN 33 km (20 mi) WNW of here earthquakes near Cocke County
Knox County, TN 43 km (27 mi) E of here earthquakes near Knox County

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

Aftershocks so far

18 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. 2.3 4 km N of Pigeon Forge, Tennessee
  5. 2.1 2 km S of Blaine, Tennessee
  6. 2.1 7 km SE of Knoxville, Tennessee
  7. 1.9 5 km NNW of Mascot, Tennessee
  8. 1.9 9 km WSW of Mascot, Tennessee
  9. 1.8 0 km ESE of Knoxville, Tennessee
  10. 2.2 10 km ENE of Knoxville, Tennessee
  11. 2.5 6 km SE of Seymour, Tennessee
  12. 2.3 11 km ESE of Mascot, Tennessee
  13. 2.0 8 km ENE of Knoxville, Tennessee
  14. 2.0 8 km W of Seymour, Tennessee
  15. 2.1 8 km ENE of Seymour, 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.