QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

0 km SSW of Rockford, Tennessee

· 21 km deep · released about 100 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Blount County 15 kmKnox County 19 kmLoudon County 35 kmSevier County 38 kmAnderson County 40 kmMonroe County 50 kmSwain County 52 kmJefferson County 52 kmRoane 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 2.4 (md)
Depth
21 km below the surface
Felt
10 reports · strongest reported intensity III
Nearest
Blount County, 15 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2465 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 10 people have reported feeling it to USGS.

How big was it?

This earthquake released about 100 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 5.8 150,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.4× the energy of this one
  4. This earthquake M 2.4 about 100 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 35.8207, -83.9453. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Blount County, TN 15 km (9 mi) N of here earthquakes near Blount County
Knox County, TN 19 km (12 mi) S of here earthquakes near Knox County
Loudon County, TN 35 km (21 mi) ENE of here earthquakes near Loudon County
Sevier County, TN 38 km (24 mi) W of here earthquakes near Sevier County
Anderson County, TN 40 km (25 mi) SE of here earthquakes near Anderson County
Monroe County, TN 50 km (31 mi) NNE of here earthquakes near Monroe County

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

Aftershocks so far

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

  1. 1.8 11 km E of Kingston, Tennessee
  2. 1.9 Tennessee
  3. 2.0 2 km ESE of Friendsville, Tennessee
  4. 1.7 5 km ENE of Sweetwater, Tennessee
  5. 2.2 3 km W of Maryville, Tennessee
  6. 2.0 7 km WSW of Townsend, Tennessee
  7. 1.5 15 km ENE of Tellico Plains, Tennessee
  8. 2.0 2 km S of Maryville, Tennessee
  9. 2.0 2 km ENE of Maryville, Tennessee
  10. 2.5 2 km SSW of Eagleton Village, Tennessee
  11. 1.8 6 km S of Friendsville, Tennessee
  12. 2.5 7 km WSW of New Market, Tennessee
  13. 2.0 3 km SE of Tellico Village, Tennessee
  14. 2.0 3 km SSW of Garland, Tennessee
  15. 1.6 7 km WSW of Tellico Village, 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.