QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

1 km NNW of Wildwood, Tennessee

· 19 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Blount County 15 kmKnox County 20 kmSevier County 32 kmLoudon County 40 kmAnderson County 43 kmSwain County 47 kmJefferson County 47 kmUnion County 52 kmGraham 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 2.3 (md)
Depth
19 km below the surface
Felt
no reports yet
Nearest
Blount County, 15 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1545 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 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 35.8200, -83.8807. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Blount County, TN 15 km (9 mi) NNE of here earthquakes near Blount County
Knox County, TN 20 km (12 mi) SSE of here earthquakes near Knox County
Sevier County, TN 32 km (20 mi) W of here earthquakes near Sevier County
Loudon County, TN 40 km (25 mi) ENE of here earthquakes near Loudon County
Anderson County, TN 43 km (27 mi) SE of here earthquakes near Anderson County
Swain County, NC 47 km (29 mi) NW of here earthquakes near Swain County

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

Aftershocks so far

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

  1. 2.5 4 km SSE of Sevierville, Tennessee
  2. 1.7 2 km SSE of Philadelphia, Tennessee
  3. 2.2 11 km SE of Townsend, Tennessee
  4. 1.6 6 km E of Oak Ridge, Tennessee
  5. 2.4 7 km ENE of Blaine, Tennessee
  6. 1.8 3 km W of Maryville, Tennessee
  7. 2.0 14 km SE of Vonore, Tennessee
  8. 1.6 5 km NNE of Greenback, Tennessee
  9. 2.1 16 km WNW of Bryson City, North Carolina
  10. 2.0 17 km W of Bryson City, North Carolina
  11. 1.7 17 km WNW of Bryson City, North Carolina
  12. 2.0 17 km WNW of Bryson City, North Carolina
  13. 1.7 17 km WNW of Bryson City, North Carolina
  14. 2.1 17 km WNW of Bryson City, North Carolina
  15. 2.0 17 km WNW of Bryson City, North Carolina

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

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