QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

4 km SSE of Sevierville, Tennessee

· 17 km deep · released about 180 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sevier County 5 kmJefferson County 26 kmSwain County 30 kmBlount County 38 kmCocke County 39 kmKnox County 40 kmGrainger County 50 kmHamblen County 50 kmUnion County 57 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
17 km below the surface
Felt
26 reports · strongest reported intensity IV
Nearest
Sevier County, 5 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 505 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 26 people have reported feeling it to USGS.

How big was it?

This earthquake released about 180 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 86,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 61,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.4× the energy of this one
  4. This earthquake M 2.5 about 180 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 35.8322, -83.5435. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sevier County, TN 5 km (3 mi) NNW of here earthquakes near Sevier County
Jefferson County, TN 26 km (16 mi) SSW of here earthquakes near Jefferson County
Swain County, NC 30 km (19 mi) NNW of here earthquakes near Swain County
Blount County, TN 38 km (23 mi) ENE of here earthquakes near Blount County
Cocke County, TN 39 km (24 mi) WSW of here earthquakes near Cocke County
Knox County, TN 40 km (25 mi) ESE of here earthquakes near Knox County

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

Aftershocks so far

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

  1. 2.3 1 km W of Rutledge, Tennessee
  2. 2.0 4 km WNW of Mascot, Tennessee
  3. 1.9 3 km NW of Mascot, Tennessee
  4. 1.7 4 km NE of Louisville, Tennessee
  5. 2.0 3 km WSW of Alcoa, Tennessee
  6. 2.2 3 km WSW of Alcoa, Tennessee
  7. 2.3 4 km N of Pigeon Forge, Tennessee
  8. 1.8 8 km NNW of Bryson City, North Carolina
  9. 2.1 2 km S of Blaine, Tennessee
  10. 2.1 7 km SE of Knoxville, Tennessee
  11. 1.9 5 km NNW of Mascot, Tennessee
  12. 1.9 9 km WSW of Mascot, Tennessee
  13. 1.8 2 km WNW of Maryville, Tennessee
  14. 1.8 0 km ESE of Knoxville, Tennessee
  15. 2.2 10 km ENE of Knoxville, 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.