QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

8 km NNW of New Market, Tennessee

· 14 km deep · released about 40 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grainger County 15 kmJefferson County 20 kmUnion County 24 kmHamblen County 31 kmKnox County 36 kmClaiborne County 37 kmSevier County 43 kmHancock County 52 kmCocke County 52 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
14 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Grainger County, 15 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1510 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 36.1702, -83.6027. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grainger County, TN 15 km (9 mi) SW of here earthquakes near Grainger County
Jefferson County, TN 20 km (12 mi) NW of here earthquakes near Jefferson County
Union County, TN 24 km (15 mi) ESE of here earthquakes near Union County
Hamblen County, TN 31 km (19 mi) W of here earthquakes near Hamblen County
Knox County, TN 36 km (22 mi) ENE of here earthquakes near Knox County
Claiborne County, TN 37 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

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

  1. 1.8 4 km S of New Tazewell, Tennessee
  2. 1.9 1 km NE of Rutledge, Tennessee
  3. 1.9 1 km WSW of Plainview, Tennessee
  4. 2.4 Kentucky-Tennessee border region
  5. 2.4 Tennessee-North Carolina border region
  6. 2.6 Kentucky-Tennessee border region
  7. 2.7 3 km S of Blaine, Tennessee
  8. 2.8 Kentucky-Tennessee border region
  9. 2.0 3 km E of Rutledge, Tennessee
  10. 2.2 Kentucky-Tennessee border region
  11. 2.3 4 km E of Harrogate, Tennessee
  12. 2.4 6 km W of Pittman Center, Tennessee
  13. 2.3 1 km NNW of Wildwood, Tennessee
  14. 2.1 2 km NW of Wildwood, Tennessee
  15. 2.6 9 km ENE of Garland, 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.