QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

9 km SE of Ethridge, Tennessee

· 2.0 km deep · released about 88 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lawrence County 17 kmGiles County 18 kmLewis County 38 kmMaury County 41 kmMarshall County 47 kmWayne County 54 kmLimestone County 55 kmLauderdale County 56 kmLincoln County 59 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
2.0 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Lawrence County, 17 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3440 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 88 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 5.8 170,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 120,000× 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 88 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 35.2657, -87.2222. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lawrence County, TN 17 km (10 mi) ENE of here earthquakes near Lawrence County
Giles County, TN 18 km (11 mi) WNW of here earthquakes near Giles County
Lewis County, TN 38 km (24 mi) SE of here earthquakes near Lewis County
Maury County, TN 41 km (26 mi) SSW of here earthquakes near Maury County
Marshall County, TN 47 km (29 mi) WSW of here earthquakes near Marshall County
Wayne County, TN 54 km (34 mi) E of here earthquakes near Wayne County

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

Aftershocks so far

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

  1. 2.4 11 km W of Elkton, Tennessee
  2. 2.3 6 km W of Lexington, Alabama
  3. 2.1 7 km NNE of Iron City, 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.