QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

5 km ESE of Mascot, Tennessee

· 20 km deep · released about 990 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Knox County 22 kmJefferson County 23 kmUnion County 30 kmGrainger County 31 kmSevier County 32 kmHamblen County 43 kmBlount County 44 kmAnderson County 46 kmClaiborne 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 3.0 (md)
Depth
20 km below the surface
Felt
109 reports · strongest reported intensity IV
Nearest
Knox County, 22 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2762 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 109 people have reported feeling it to USGS.

How big was it?

This earthquake released about 990 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 340,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 15,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 990 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 36.0383, -83.6955. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Knox County, TN 22 km (14 mi) ENE of here earthquakes near Knox County
Jefferson County, TN 23 km (14 mi) W of here earthquakes near Jefferson County
Union County, TN 30 km (19 mi) SSE of here earthquakes near Union County
Grainger County, TN 31 km (20 mi) SSW of here earthquakes near Grainger County
Sevier County, TN 32 km (20 mi) NNW of here earthquakes near Sevier County
Hamblen County, TN 43 km (27 mi) WSW of here earthquakes near Hamblen County

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

Aftershocks so far

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

  1. 2.3 0 km SW of Knoxville, Tennessee
  2. 2.4 10 km S of Pittman Center, Tennessee
  3. 2.3 7 km W of New Market, Tennessee
  4. 2.5 7 km SE of Maryville, Tennessee
  5. 2.4 4 km ESE of Rutledge, Tennessee
  6. 2.4 7 km SE of Rutledge, Tennessee
  7. 2.0 Kentucky-Tennessee border region
  8. 2.6 7 km ENE of Seymour, Tennessee
  9. 2.4 8 km ENE of Seymour, Tennessee
  10. 2.1 8 km NNW of New Market, Tennessee
  11. 2.5 11 km WNW of Rutledge, Tennessee
  12. 2.5 5 km ENE of Rutledge, Tennessee
  13. 2.0 7 km NE of Rockford, Tennessee
  14. 2.1 7 km NNW of New Market, Tennessee
  15. 1.8 6 km NW of Mascot, 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.