QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

11 km S of Oak Ridge, Tennessee

· 13 km deep · released about 47 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Loudon County 19 kmRoane County 22 kmAnderson County 25 kmKnox County 33 kmMorgan County 40 kmBlount County 41 kmMonroe County 51 kmCampbell County 56 kmUnion County 59 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
Loudon County, 19 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1866 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 47 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 5.8 320,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 20× the energy of this one
  4. This earthquake M 2.1 about 47 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 35.9062, -84.2937. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loudon County, TN 19 km (12 mi) N of here earthquakes near Loudon County
Roane County, TN 22 km (14 mi) ENE of here earthquakes near Roane County
Anderson County, TN 25 km (16 mi) SSW of here earthquakes near Anderson County
Knox County, TN 33 km (21 mi) WSW of here earthquakes near Knox County
Morgan County, TN 40 km (25 mi) SE of here earthquakes near Morgan County
Blount County, TN 41 km (26 mi) NW of here earthquakes near Blount County

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

Aftershocks so far

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

  1. 1.7 8 km E of Greenback, Tennessee
  2. 2.2 9 km W of Clinton, Tennessee
  3. 1.6 1 km SSW of Eagleton Village, Tennessee
  4. 2.2 7 km ENE of Niota, Tennessee
  5. 2.0 Tennessee-North Carolina border region
  6. 2.4 Kentucky-Tennessee border region
  7. 2.1 6 km WSW of Tellico Village, Tennessee
  8. 2.4 Tennessee-North Carolina border region
  9. 2.5 4 km NNE of Greenback, Tennessee
  10. 2.1 Tennessee
  11. 1.9 3 km N of Niota, Tennessee
  12. 2.2 1 km S of Garland, Tennessee
  13. 2.0 3 km ESE of Vonore, Tennessee
  14. 1.8 4 km SSW of Loudon, Tennessee
  15. 2.0 3 km SSW of Maryville, 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.