QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

7 km NE of Pelham, Tennessee

· 9.6 km deep · released about 82 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grundy County 11 kmCoffee County 27 kmMarion County 33 kmFranklin County 33 kmWarren County 36 kmSequatchie County 38 kmMoore County 49 kmVan Buren County 51 kmCannon County 54 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
9.6 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Grundy County, 11 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2903 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 82 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 12× the energy of this one
  4. This earthquake M 2.3 about 82 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 35.3585, -85.8285. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grundy County, TN 11 km (7 mi) WSW of here earthquakes near Grundy County
Coffee County, TN 27 km (17 mi) ESE of here earthquakes near Coffee County
Marion County, TN 33 km (20 mi) NW of here earthquakes near Marion County
Franklin County, TN 33 km (21 mi) NE of here earthquakes near Franklin County
Warren County, TN 36 km (22 mi) S of here earthquakes near Warren County
Sequatchie County, TN 38 km (24 mi) W of here earthquakes near Sequatchie County

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

Aftershocks so far

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

  1. 2.4 12 km S of Tracy City, Tennessee
  2. 2.3 3 km S of Lone Oak, Tennessee
  3. 2.5 6 km SSE of Sewanee, Tennessee
  4. 2.2 8 km ENE of Dunlap, Tennessee
  5. 2.2 9 km SE of Palmer, Tennessee
  6. 2.3 11 km ESE of McMinnville, Tennessee
  7. 2.3 4 km ESE of Powells Crossroads, Tennessee
  8. 2.4 10 km NNW of Kimball, Tennessee
  9. 2.8 7 km SSE of Sewanee, Tennessee
  10. 3.1 7 km SSE of Sewanee, Tennessee
  11. 2.4 Tennessee
  12. 2.5 4 km ESE of Manchester, Tennessee
  13. 2.8 5 km SSE of Wartrace, 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.