QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

7 km W of Madisonville, Tennessee

· 13 km deep · released about 12 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N McMinn County 19 kmMonroe County 19 kmLoudon County 28 kmMeigs County 34 kmRoane County 38 kmPolk County 45 kmRhea County 47 kmBlount County 51 kmCherokee County 54 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 1.7 (md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
McMinn County, 19 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3181 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 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 870,000× the energy of this one
  3. Around the size people start to feel M 3.0 78× the energy of this one
  4. This earthquake M 1.7 about 12 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 35.5080, -84.4432. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
McMinn County, TN 19 km (12 mi) ENE of here earthquakes near McMinn County
Monroe County, TN 19 km (12 mi) WNW of here earthquakes near Monroe County
Loudon County, TN 28 km (17 mi) SSW of here earthquakes near Loudon County
Meigs County, TN 34 km (21 mi) E of here earthquakes near Meigs County
Roane County, TN 38 km (24 mi) S of here earthquakes near Roane County
Polk County, TN 45 km (28 mi) NNE of here earthquakes near Polk 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. 2.1 2 km ESE of Tellico Village, Tennessee
  2. 2.2 2 km ESE of Tellico Village, Tennessee
  3. 2.3 1 km E of Tellico Village, Tennessee
  4. 1.7 3 km S of Huntsville, Tennessee
  5. 1.7 1 km N of Decatur, Tennessee
  6. 2.3 2 km NE of Tellico Village, Tennessee
  7. 2.2 9 km SSE of Coalfield, Tennessee
  8. 1.7 1 km N of Huntsville, Tennessee
  9. 1.7 11 km NNE of Decatur, Tennessee
  10. 2.8 13 km SE of Vonore, Tennessee
  11. 2.2 2 km SSE of Englewood, Tennessee
  12. 2.1 2 km SSE of Englewood, Tennessee
  13. 2.1 12 km NNE of Decatur, TN
  14. 2.1 11 km NNE of Decatur, Tennessee
  15. 1.8 10 km NNE of Decatur, 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.