QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

3 km WSW of Petros, Tennessee

· 12 km deep · released about 190 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Morgan County 16 kmAnderson County 26 kmRoane County 26 kmScott County 39 kmLoudon County 41 kmCampbell County 46 kmCumberland County 49 kmKnox County 49 kmFentress County 53 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 2.5 (md)
Depth
12 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Morgan County, 16 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2614 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 190 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 80,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 57,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.1× the energy of this one
  4. This earthquake M 2.5 about 190 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 36.0778, -84.4768. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Morgan County, TN 16 km (10 mi) ESE of here earthquakes near Morgan County
Anderson County, TN 26 km (16 mi) W of here earthquakes near Anderson County
Roane County, TN 26 km (16 mi) N of here earthquakes near Roane County
Scott County, TN 39 km (24 mi) S of here earthquakes near Scott County
Loudon County, TN 41 km (25 mi) NNW of here earthquakes near Loudon County
Campbell County, TN 46 km (29 mi) SW of here earthquakes near Campbell County

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

Aftershocks so far

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

  1. 2.1 11 km S of Oak Ridge, Tennessee
  2. 4.3 2 km ENE of Crab Orchard, Tennessee
  3. 3.1 4 km SSW of Crab Orchard, Tennessee
  4. 2.0 3 km W of Knoxville, Tennessee
  5. 2.1 6 km E of Kingston, Tennessee
  6. 2.6 7 km WSW of Knoxville, Tennessee
  7. 1.5 11 km E of Kingston, Tennessee
  8. 1.8 11 km E of Kingston, Tennessee
  9. 2.0 2 km ESE of Friendsville, Tennessee
  10. 1.6 11 km WNW of Sweetwater, Tennessee
  11. 2.0 3 km SSW of Garland, Tennessee
  12. 1.6 7 km WSW of Tellico Village, Tennessee
  13. 1.6 3 km ENE of Philadelphia, Tennessee
  14. 2.4 16 km E of Spring City, Tennessee
  15. 2.0 3 km SSW of Loudon, 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.