QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

7 km WSW of Knoxville, Tennessee

· 23 km deep · released about 220 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Knox County 9 kmBlount County 27 kmAnderson County 28 kmLoudon County 36 kmUnion County 42 kmSevier County 45 kmRoane County 49 kmJefferson County 51 kmCampbell County 55 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 2.6 (md)
Depth
23 km below the surface
Felt
9 reports · strongest reported intensity IV
Nearest
Knox County, 9 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1892 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 9 people have reported feeling it to USGS.

How big was it?

This earthquake released about 220 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 70,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 50,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.4× the energy of this one
  4. This earthquake M 2.6 about 220 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 35.9270, -83.9898. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Knox County, TN 9 km (5 mi) SSW of here earthquakes near Knox County
Blount County, TN 27 km (17 mi) NNW of here earthquakes near Blount County
Anderson County, TN 28 km (17 mi) SE of here earthquakes near Anderson County
Loudon County, TN 36 km (22 mi) NE of here earthquakes near Loudon County
Union County, TN 42 km (26 mi) SSW of here earthquakes near Union County
Sevier County, TN 45 km (28 mi) WNW of here earthquakes near Sevier County

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

Aftershocks so far

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

  1. 2.7 3 km S of Blaine, Tennessee
  2. 2.0 3 km ESE of Vonore, Tennessee
  3. 1.8 4 km SSW of Loudon, Tennessee
  4. 2.0 3 km SSW of Maryville, Tennessee
  5. 2.1 5 km S of Greenback, Tennessee
  6. 1.8 6 km NNW of Farragut, Tennessee
  7. 2.5 Tennessee
  8. 1.7 3 km NE of Greenback, Tennessee
  9. 1.8 Tennessee
  10. 1.8 4 km NE of Vonore, Tennessee
  11. 2.0 Tennessee
  12. 2.5 2 km N of Farragut, Tennessee
  13. 1.9 8 km SSE of Vonore, Tennessee
  14. 1.5 6 km NNW of Philadelphia, Tennessee
  15. 1.9 6 km E of Vonore, 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.