QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

5 km S of Louisville, Tennessee

· 16 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Blount County 15 kmLoudon County 24 kmKnox County 27 kmMonroe County 40 kmAnderson County 41 kmRoane County 43 kmSevier County 48 kmGraham County 51 kmSwain County 58 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 1.8 (md)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Blount County, 15 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 571 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 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 810,000× the energy of this one
  3. Around the size people start to feel M 3.0 72× the energy of this one
  4. This earthquake M 1.8 about 13 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 35.7690, -84.0533. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Blount County, TN 15 km (9 mi) NW of here earthquakes near Blount County
Loudon County, TN 24 km (15 mi) E of here earthquakes near Loudon County
Knox County, TN 27 km (17 mi) SSW of here earthquakes near Knox County
Monroe County, TN 40 km (25 mi) NNE of here earthquakes near Monroe County
Anderson County, TN 41 km (25 mi) SSE of here earthquakes near Anderson County
Roane County, TN 43 km (27 mi) ESE of here earthquakes near Roane County

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

Aftershocks so far

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

  1. 2.1 5 km S of Sweetwater, Tennessee
  2. 2.2 2 km SSW of Greenback, Tennessee
  3. 1.8 13 km SSE of Greenback, Tennessee
  4. 1.8 4 km E of Madisonville, Tennessee
  5. 2.5 5 km E of Madisonville, Tennessee
  6. 2.1 7 km SE of Knoxville, Tennessee
  7. 1.9 5 km NNW of Mascot, Tennessee
  8. 2.0 5 km NNW of Vonore, Tennessee
  9. 1.9 9 km WSW of Mascot, Tennessee
  10. 2.2 10 km WNW of Philadelphia, Tennessee
  11. 2.2 13 km SE of Greenback, Tennessee
  12. 2.0 21 km SE of Greenback, Tennessee
  13. 1.8 2 km WNW of Maryville, Tennessee
  14. 1.8 0 km ESE of Knoxville, Tennessee
  15. 1.6 5 km WSW of Friendsville, 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.