QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

8 km NNW of Greeneville, Tennessee

· 22 km deep · released about 79 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Greene County 6 kmHawkins County 25 kmWashington County 33 kmHamblen County 37 kmUnicoi County 42 kmCocke County 42 kmMadison County 43 kmHancock County 46 kmJefferson County 56 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
22 km below the surface
Felt
11 reports · strongest reported intensity IV
Nearest
Greene County, 6 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 586 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 11 people have reported feeling it to USGS.

How big was it?

This earthquake released about 79 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 5.8 190,000× 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 79 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 36.2332, -82.8585. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Greene County, TN 6 km (4 mi) N of here earthquakes near Greene County
Hawkins County, TN 25 km (16 mi) SSE of here earthquakes near Hawkins County
Washington County, TN 33 km (21 mi) WSW of here earthquakes near Washington County
Hamblen County, TN 37 km (23 mi) E of here earthquakes near Hamblen County
Unicoi County, TN 42 km (26 mi) WNW of here earthquakes near Unicoi County
Cocke County, TN 42 km (26 mi) NNE of here earthquakes near Cocke County

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

Aftershocks so far

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

  1. 2.3 2 km ENE of Greeneville, Tennessee
  2. 2.4 5 km NNE of Bean Station, 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.