QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

8 km ENE of Dunlap, Tennessee

· 15 km deep · released about 54 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sequatchie County 10 kmBledsoe County 23 kmHamilton County 28 kmVan Buren County 36 kmGrundy County 37 kmRhea County 39 kmMarion County 41 kmMeigs County 46 kmBradley County 49 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 2.2 (md)
Depth
15 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Sequatchie County, 10 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1263 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 54 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 280,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 200,000× the energy of this one
  3. Around the size people start to feel M 3.0 18× the energy of this one
  4. This earthquake M 2.2 about 54 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 35.4037, -85.3047. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sequatchie County, TN 10 km (6 mi) ENE of here earthquakes near Sequatchie County
Bledsoe County, TN 23 km (14 mi) SSW of here earthquakes near Bledsoe County
Hamilton County, TN 28 km (18 mi) NNW of here earthquakes near Hamilton County
Van Buren County, TN 36 km (22 mi) SSE of here earthquakes near Van Buren County
Grundy County, TN 37 km (23 mi) E of here earthquakes near Grundy County
Rhea County, TN 39 km (24 mi) SW of here earthquakes near Rhea County

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

Aftershocks so far

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

  1. 2.4 12 km S of Tracy City, Tennessee
  2. 2.2 2 km W of Dayton, Tennessee
  3. 2.1 4 km NNW of Dayton, Tennessee
  4. 1.8 6 km SW of Decatur, Tennessee
  5. 2.2 10 km SSE of Dayton, Tennessee
  6. 2.3 3 km S of Lone Oak, Tennessee
  7. 2.1 6 km NNE of Hopewell, Tennessee
  8. 2.0 1 km WSW of Collegedale, Tennessee
  9. 1.6 9 km SW of Spring City, Tennessee
  10. 2.2 9 km NNW of Graysville, Tennessee
  11. 2.2 10 km W of Graysville, Tennessee
  12. 1.8 4 km WSW of Decatur, Tennessee
  13. 1.9 1 km E of Collegedale, Tennessee
  14. 2.6 14 km W of Graysville, Tennessee
  15. 2.3 13 km W of Graysville, 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.