QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

4 km SW of Friendsville, Tennessee

· 23 km deep · released about 380 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Loudon County 14 kmBlount County 22 kmMonroe County 32 kmRoane County 35 kmKnox County 36 kmAnderson County 44 kmGraham County 52 kmMcMinn County 53 kmSevier 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 2.7 (md)
Depth
23 km below the surface
Felt
no reports yet
Nearest
Loudon County, 14 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3270 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 380 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 40,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 29,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.5× the energy of this one
  4. This earthquake M 2.7 about 380 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 35.7250, -84.1650. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loudon County, TN 14 km (8 mi) E of here earthquakes near Loudon County
Blount County, TN 22 km (14 mi) W of here earthquakes near Blount County
Monroe County, TN 32 km (20 mi) NNE of here earthquakes near Monroe County
Roane County, TN 35 km (22 mi) ESE of here earthquakes near Roane County
Knox County, TN 36 km (22 mi) SW of here earthquakes near Knox County
Anderson County, TN 44 km (27 mi) S of here earthquakes near Anderson County

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

Aftershocks so far

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

  1. 2.1 2 km SSE of Englewood, Tennessee
  2. 1.5 10 km ENE of Kingston, Tennessee
  3. 1.8 3 km ESE of Garland, Tennessee
  4. 2.3 4 km WSW of Seymour, Tennessee
  5. 2.7 12 km NW of Sweetwater, Tennessee
  6. 2.1 7 km WSW of Maryville, Tennessee
  7. 2.1 4 km ENE of Vonore, Tennessee
  8. 1.7 8 km SSE of Friendsville, Tennessee
  9. 1.8 8 km NNE of Louisville, Tennessee
  10. 1.6 6 km SE of Sweetwater, Tennessee
  11. 1.7 6 km SW of Tellico Village, Tennessee
  12. 2.1 12 km S of Vonore, Tennessee
  13. 2.1 3 km N of Tellico Village, Tennessee
  14. 2.7 6 km ESE of Englewood, Tennessee
  15. 1.5 1 km NW of Huntsville, 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.