QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

7 km NNW of New Market, Tennessee

· 4.3 km deep · released about 40 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grainger County 14 kmJefferson County 18 kmUnion County 26 kmHamblen County 29 kmKnox County 37 kmClaiborne County 38 kmSevier County 43 kmCocke County 50 kmHancock 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 2.1 (md)
Depth
4.3 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Grainger County, 14 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2280 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 40 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 5.8 380,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 270,000× the energy of this one
  3. Around the size people start to feel M 3.0 24× the energy of this one
  4. This earthquake M 2.1 about 40 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 36.1680, -83.5840. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grainger County, TN 14 km (9 mi) SSW of here earthquakes near Grainger County
Jefferson County, TN 18 km (11 mi) NW of here earthquakes near Jefferson County
Union County, TN 26 km (16 mi) ESE of here earthquakes near Union County
Hamblen County, TN 29 km (18 mi) W of here earthquakes near Hamblen County
Knox County, TN 37 km (23 mi) ENE of here earthquakes near Knox County
Claiborne County, TN 38 km (23 mi) S of here earthquakes near Claiborne County

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

Aftershocks so far

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

  1. 2.4 Kentucky-Tennessee border region
  2. 2.4 Tennessee-North Carolina border region
  3. 2.6 Kentucky-Tennessee border region
  4. 2.7 3 km S of Blaine, Tennessee
  5. 2.8 Kentucky-Tennessee border region
  6. 2.0 3 km E of Rutledge, Tennessee
  7. 2.2 Kentucky-Tennessee border region
  8. 2.3 4 km E of Harrogate, Tennessee
  9. 2.4 6 km W of Pittman Center, Tennessee
  10. 2.3 1 km NNW of Wildwood, Tennessee
  11. 2.1 2 km NW of Wildwood, Tennessee
  12. 2.6 9 km ENE of Garland, Tennessee
  13. 2.5 8 km WSW of New Market, Tennessee
  14. 2.5 Tennessee-North Carolina border region
  15. 2.0 6 km WSW of New Tazewell, 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.