QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

1 km ENE of Dayton, Tennessee

· 21 km deep · released about 31 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Rhea County 12 kmMeigs County 16 kmBledsoe County 22 kmMcMinn County 35 kmSequatchie County 40 kmBradley County 40 kmHamilton County 42 kmVan Buren County 47 kmCumberland County 50 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 2.0 (md)
Depth
21 km below the surface
Felt
no reports yet
Nearest
Rhea County, 12 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1361 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 31 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 480,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 340,000× the energy of this one
  3. Around the size people start to feel M 3.0 31× the energy of this one
  4. This earthquake M 2.0 about 31 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 35.4988, -84.9965. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rhea County, TN 12 km (8 mi) SSW of here earthquakes near Rhea County
Meigs County, TN 16 km (10 mi) W of here earthquakes near Meigs County
Bledsoe County, TN 22 km (13 mi) ESE of here earthquakes near Bledsoe County
McMinn County, TN 35 km (22 mi) WNW of here earthquakes near McMinn County
Sequatchie County, TN 40 km (25 mi) ENE of here earthquakes near Sequatchie County
Bradley County, TN 40 km (25 mi) NNW of here earthquakes near Bradley County

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

Aftershocks so far

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

  1. 2.1 5 km S of Sweetwater, Tennessee
  2. 1.9 5 km SSW of Riceville, Tennessee
  3. 1.9 8 km WSW of Etowah, Tennessee
  4. 1.8 6 km WSW of Etowah, Tennessee
  5. 2.0 6 km ENE of Niota, Tennessee
  6. 2.2 2 km W of Dayton, Tennessee
  7. 2.1 4 km NNW of Dayton, Tennessee
  8. 2.2 13 km S of Midtown, Tennessee
  9. 1.7 5 km ENE of Niota, Tennessee
  10. 1.8 6 km SW of Decatur, Tennessee
  11. 2.1 3 km NE of Niota, Tennessee
  12. 1.9 5 km SSW of Sweetwater, Tennessee
  13. 2.3 7 km SSE of Charleston, Tennessee
  14. 2.4 4 km E of Athens, Tennessee
  15. 2.2 10 km SSE of Dayton, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.4 on 2018-12-12 — it released about 3,800 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.